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All questions of Improvement in Food Resources for Grade 9 Exam
Catlas feed on the ______________ of the water body.- a)surface
- b)grasses/weeds
- c)bottom zone
- d)middle zone
Correct answer is option 'A'. Can you explain this answer?
Catlas feed on the ______________ of the water body.
a)
surface
b)
grasses/weeds
c)
bottom zone
d)
middle zone
|
Rajdeep Das answered |
**Catlas feed on the surface of the water body.**
**Introduction:**
Catlas, also known as walking catfish, are a type of air-breathing catfish that are native to Southeast Asia. They have the unique ability to move across land using their pectoral fins and breathe atmospheric oxygen. While they primarily live in water, they are capable of surviving in oxygen-depleted environments and can even migrate between water bodies.
**Feeding Behavior of Catlas:**
Catlas are omnivorous, meaning they consume both plant matter and small animals. However, their feeding behavior primarily focuses on the surface of the water body.
**Surface Feeding:**
Catlas are surface feeders, meaning they prefer to feed on food sources that are present on or near the surface of the water. This includes insects, small fish, crustaceans, and other small organisms that inhabit the surface layer.
**Advantages of Surface Feeding:**
1. Accessibility: The surface of the water provides easy access to food sources for catlas. They can quickly spot and capture prey that is swimming or floating on the surface.
2. Efficient Breathing: As air-breathing catfish, catlas need to regularly come up to the surface to breathe atmospheric oxygen. By feeding on the surface, they can satisfy their feeding and respiratory needs simultaneously.
3. Exploiting Resources: Many insects and other small organisms are found near the surface of the water, making it a rich feeding ground for catlas. By focusing on surface feeding, they can efficiently exploit available food resources.
**Feeding Adaptations:**
Catlas have evolved certain adaptations that facilitate their surface feeding behavior:
1. Upturned Mouth: The mouth of catlas is positioned in such a way that it faces upwards, allowing them to grab prey from the surface more easily.
2. Sensory Organs: They possess well-developed sensory organs, such as highly sensitive barbels or whisker-like structures, which help them detect and locate food sources on the water surface.
**Conclusion:**
Catlas are surface feeders, primarily feeding on the organisms present on or near the surface of the water body. Their ability to adapt to different environments and their unique feeding behavior contribute to their success as a species.
**Introduction:**
Catlas, also known as walking catfish, are a type of air-breathing catfish that are native to Southeast Asia. They have the unique ability to move across land using their pectoral fins and breathe atmospheric oxygen. While they primarily live in water, they are capable of surviving in oxygen-depleted environments and can even migrate between water bodies.
**Feeding Behavior of Catlas:**
Catlas are omnivorous, meaning they consume both plant matter and small animals. However, their feeding behavior primarily focuses on the surface of the water body.
**Surface Feeding:**
Catlas are surface feeders, meaning they prefer to feed on food sources that are present on or near the surface of the water. This includes insects, small fish, crustaceans, and other small organisms that inhabit the surface layer.
**Advantages of Surface Feeding:**
1. Accessibility: The surface of the water provides easy access to food sources for catlas. They can quickly spot and capture prey that is swimming or floating on the surface.
2. Efficient Breathing: As air-breathing catfish, catlas need to regularly come up to the surface to breathe atmospheric oxygen. By feeding on the surface, they can satisfy their feeding and respiratory needs simultaneously.
3. Exploiting Resources: Many insects and other small organisms are found near the surface of the water, making it a rich feeding ground for catlas. By focusing on surface feeding, they can efficiently exploit available food resources.
**Feeding Adaptations:**
Catlas have evolved certain adaptations that facilitate their surface feeding behavior:
1. Upturned Mouth: The mouth of catlas is positioned in such a way that it faces upwards, allowing them to grab prey from the surface more easily.
2. Sensory Organs: They possess well-developed sensory organs, such as highly sensitive barbels or whisker-like structures, which help them detect and locate food sources on the water surface.
**Conclusion:**
Catlas are surface feeders, primarily feeding on the organisms present on or near the surface of the water body. Their ability to adapt to different environments and their unique feeding behavior contribute to their success as a species.
Which is a desirable characteristic in poultry?- a)Reduced quality of chicken
- b)Low tolerance to high temperature
- c)Low maintenance requirements
- d)Large size of the egg laying bird
Correct answer is option 'C'. Can you explain this answer?
Which is a desirable characteristic in poultry?
a)
Reduced quality of chicken
b)
Low tolerance to high temperature
c)
Low maintenance requirements
d)
Large size of the egg laying bird
|
Learners Habitat answered |
Summer adaptation capacity/ tolerance to high temperature. Low maintenance requirements.
Reduction in the size of the egg-laying birds with ability to utilise more fibrous cheaper diets formulated using agricultural by-products.
Reduction in the size of the egg-laying birds with ability to utilise more fibrous cheaper diets formulated using agricultural by-products.
Practice of culturing marine fish is known as:
- a) Sericulture
- b) Aquaculture
- c) Pisciculture
- d) Mariculture
Correct answer is option 'D'. Can you explain this answer?
Practice of culturing marine fish is known as:
a)
Sericultureb)
Aquaculturec)
Piscicultured)
Mariculture
|
Vikram Khanna answered |
Aquaculture, a type of agriculture, is the practice of cultivating aquatic animals and plants in managed aquatic environments. Aquaculture in salt-water or marine environments is called mariculture. Fish culture, or pisciculture, refers to the husbandry of finfish .
Buffalo's milk does not contain :-- a)Vitamin C
- b)Vitamin E
- c)Carbohydrate
- d)Protein
Correct answer is option 'C'. Can you explain this answer?
Buffalo's milk does not contain :-
a)
Vitamin C
b)
Vitamin E
c)
Carbohydrate
d)
Protein
|
Poonam Reddy answered |
Correct answer: C
Buffalo Milk provide the right amount of bone-building nutrients, specifically calcium, vitamin D, protein, phosphorus, magnesium, potassium, vitamin B12 and zinc.
Buffalo Milk does not contain Vitamin C. This vitamin is generally found in Broccoli, Tomato, spinach etc
Poultry feed has a higher level of:- a)Vitamin A and E
- b)Vitamin C and D
- c)Vitamin B and K
- d)Vitamin A and K
Correct answer is 'D'. Can you explain this answer?
Poultry feed has a higher level of:
a)
Vitamin A and E
b)
Vitamin C and D
c)
Vitamin B and K
d)
Vitamin A and K
|
Anita Nawal Pathak answered |
Vitamin K is essential for synthesis of prothrombin, thus it plays an important role in clotting mechanisms and also has a protective effect against coccidiosis.
Deficiency of vitamin K may cause an increase of blood spots in eggs, haemorrhages in the legs and breast and a failure of blood clotting.
Wheat germ oil, fish liver oil, alfalfa meal, greens, germinated pulses, soybean oil, grains and fish meals are rich source of Vitamin A, D3, E and K.
Vitamin A is required for normal growth, reproduction and maintenance of epithelial cells in good condition (skin and the linings of the digestive, reproductive, and respiratory tracts).
Deficiency causes nutritional roup, characterised by conjunctivitis, oculo-nasal discharge, and eyelids stuck together with thick exudates. In advanced cases necrosis and keratinisation of mucosa of alimentary and respiratory tract occurs.
Fish liver oil and greens are rich sources of vitamin A.
Deficiency of vitamin K may cause an increase of blood spots in eggs, haemorrhages in the legs and breast and a failure of blood clotting.
Wheat germ oil, fish liver oil, alfalfa meal, greens, germinated pulses, soybean oil, grains and fish meals are rich source of Vitamin A, D3, E and K.
Vitamin A is required for normal growth, reproduction and maintenance of epithelial cells in good condition (skin and the linings of the digestive, reproductive, and respiratory tracts).
Deficiency causes nutritional roup, characterised by conjunctivitis, oculo-nasal discharge, and eyelids stuck together with thick exudates. In advanced cases necrosis and keratinisation of mucosa of alimentary and respiratory tract occurs.
Fish liver oil and greens are rich sources of vitamin A.
Dr. V. Kurien is famous for :-- a)Green revolution
- b)White revolution
- c)Yellow revolution
- d)Blue revolution
Correct answer is option 'B'. Can you explain this answer?
Dr. V. Kurien is famous for :-
a)
Green revolution
b)
White revolution
c)
Yellow revolution
d)
Blue revolution
|
Aniket Yadav answered |
Dr Verghese Kurien, Father of the White Revolution and man behind Amul. “Eight hours for dairy, eight hours for family and eight hours for sleep” – words from Dr Verghese Kurien who is known as the Father of the White Revolution. He is so called because of his initiatives and immense contribution to the dairy sector.
Cattle feed should contain :-- a)Concentrate
- b)Roughage
- c)Both
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
Cattle feed should contain :-
a)
Concentrate
b)
Roughage
c)
Both
d)
None of these
|
|
Vikas Kapoor answered |
Animal feed includes: A. roughage, which is largely fibre,and B. concentrates,which are low in fibre and contains relatively high levels of proteins and other nutrients. Cattle balanced rations containing all nutrition in proportionate amount, besides such nutritions food material, certain feed additives containing micronutrients promote the health and milk output of dairy animals.
Find out the correct sentence about manure
(i) Manure contains large quantities of organic matter and small quantities of nutrients.
(ii) It increases the water holding capacity of sandy soil.
(iii) It helps in draining out of excess of water from clayey soil.
(iv) It excessive use pollutes environment because it is made of animal excretory waste.
- a)(i) and (iii)
- b)(i), (ii) and (iii)
- c)(ii) and (iii)
- d)(iii) and (iv)
Correct answer is option 'B'. Can you explain this answer?
Find out the correct sentence about manure
(i) Manure contains large quantities of organic matter and small quantities of nutrients.
(ii) It increases the water holding capacity of sandy soil.
(iii) It helps in draining out of excess of water from clayey soil.
(iv) It excessive use pollutes environment because it is made of animal excretory waste.
(i) Manure contains large quantities of organic matter and small quantities of nutrients.
(ii) It increases the water holding capacity of sandy soil.
(iii) It helps in draining out of excess of water from clayey soil.
(iv) It excessive use pollutes environment because it is made of animal excretory waste.
a)
(i) and (iii)
b)
(i), (ii) and (iii)
c)
(ii) and (iii)
d)
(iii) and (iv)
|
Arka Dey answered |
Statement (i) and (ii) are correct because manure is prepared from the break- down of plant and animal waste products. Hence it is rich in organic matter. Manure contributes to the fertility of the soil by adding organic - matter and some essential nutrients like N, P and K which helps in enhancing growth of plants. Manure makes the clayey soil aerated because of their small - pores and increase the water holding capacity of the sandy soil due to their large pore size. . In clayey soils, the large quantities of organic matter help in drainage and in avoiding water logging. . In clayey soils, the large quantities of organic matter help in drainage and in avoiding water logging.
Bombay duck and hilsa are examples of- a)freshwater fish
- b)marine fish
- c)breeds of sheep
- d)breeds of ducks
Correct answer is option 'B'. Can you explain this answer?
Bombay duck and hilsa are examples of
a)
freshwater fish
b)
marine fish
c)
breeds of sheep
d)
breeds of ducks
|
|
Aniket Yadav answered |
The Bombay Duck fish is a lizard fish which is known by many names such as Bummalo, Loytta, Bombil etc.
The Hilsa fish is a very popular food fish in South Asia. It is also known by many names such as Ilish, Hilsa herring, Hilsa Shad, Ellis, Modar etc.
Bombay duck and Hilsa are prime example of marine fish as they are found in salt water such as oceans or salt lakes, although the two varieties of hilsa namely Tenualosa ilisha and Tenualosa toli ilisha are found both in marine and fresh waters of Bangladesh.
______ जीवन में भागम भाग है |- a)ग्रामीण
- b)शहरी
- c)स्थानीय
- d)विदेशी
Correct answer is option 'B'. Can you explain this answer?
______ जीवन में भागम भाग है |
a)
ग्रामीण
b)
शहरी
c)
स्थानीय
d)
विदेशी
|
Saikat Chawla answered |
शहरी जीवन में भागमभाग इसलिए है, क्योंकि कमरतोड़ महँगाई के कारण वहाँ के जीवन में धन कमाने की होड़ मची हुई है जिसके कारण उनके पास समय का अभाव है।
Percentage of proteins in the fish meal is :-- a)15 - 20%
- b)25 - 50%
- c)40 - 50%
- d)55 - 70%
Correct answer is option 'D'. Can you explain this answer?
Percentage of proteins in the fish meal is :-
a)
15 - 20%
b)
25 - 50%
c)
40 - 50%
d)
55 - 70%
|
|
Aniket Yadav answered |
Any complete diet must contain some protein, but the nutritional value of the protein relates directly to its amino acid composition and digestibility. High-quality fishmeal normally contains between 60% and 72% crude protein by weight. Typical diets for fish may contain from 32% to 45% total protein by weight.
The viral disease 'Ranikhet' is associated with :-- a)Cattle
- b)Poultry
- c)Fishes
- d)Bees
Correct answer is option 'B'. Can you explain this answer?
The viral disease 'Ranikhet' is associated with :-
a)
Cattle
b)
Poultry
c)
Fishes
d)
Bees
|
|
Arka Dey answered |
Ranikhet disease is caused by a virus in poultry birds (chicken) during summer. It will cause diarrhoea in the birds, leading to high death rates among the birds.
Chickens or turkeys raised specifically for meat are called:- a)Bird Culture
- b)Pullets
- c)Broilers
- d)Hybrids
Correct answer is option 'C'. Can you explain this answer?
Chickens or turkeys raised specifically for meat are called:
a)
Bird Culture
b)
Pullets
c)
Broilers
d)
Hybrids
|
Maggie answered |
Chickens raised for eggs are usually calledlayers while chickens raised for meat are often called broilers.
Which of the following groups of crops primarily provides carbohydrates? - a)Pulses
- b)Oilseeds
- c)Cereals
- d)Fruits
Correct answer is option 'C'. Can you explain this answer?
Which of the following groups of crops primarily provides carbohydrates?
a)
Pulses
b)
Oilseeds
c)
Cereals
d)
Fruits
|
|
Avishi Iyer answered |
Understanding Carbohydrate Sources
Carbohydrates are essential macronutrients that provide energy for daily activities and bodily functions. Different groups of crops contribute varied nutritional benefits, but cereals are primarily known for their high carbohydrate content.
Why Cereals Are the Primary Source of Carbohydrates
- Composition: Cereals, such as rice, wheat, maize, and barley, are composed of starch, which is a complex carbohydrate. Starch is the main energy source in many diets worldwide.
- Energy Density: Cereals are energy-dense foods, meaning they provide a significant amount of calories per serving. This makes them a staple food in many cultures.
- Digestibility: The carbohydrates in cereals are easily digestible, allowing for quick energy release. This is particularly important for people with active lifestyles.
Comparison with Other Crop Groups
- Pulses: While pulses (like lentils and beans) are rich in protein and dietary fiber, they contain less carbohydrate compared to cereals.
- Oilseeds: Oilseeds (such as soybeans and sunflower seeds) are primarily sources of fats and proteins, with minimal carbohydrate content.
- Fruits: Fruits do contain carbohydrates, mainly in the form of sugars, but they generally provide less energy compared to cereals. They are more recognized for their vitamins and minerals.
Conclusion
Cereals stand out as the primary source of carbohydrates due to their high starch content, energy density, and digestibility. This makes them a crucial component of a balanced diet, especially for those needing sustained energy throughout the day.
Carbohydrates are essential macronutrients that provide energy for daily activities and bodily functions. Different groups of crops contribute varied nutritional benefits, but cereals are primarily known for their high carbohydrate content.
Why Cereals Are the Primary Source of Carbohydrates
- Composition: Cereals, such as rice, wheat, maize, and barley, are composed of starch, which is a complex carbohydrate. Starch is the main energy source in many diets worldwide.
- Energy Density: Cereals are energy-dense foods, meaning they provide a significant amount of calories per serving. This makes them a staple food in many cultures.
- Digestibility: The carbohydrates in cereals are easily digestible, allowing for quick energy release. This is particularly important for people with active lifestyles.
Comparison with Other Crop Groups
- Pulses: While pulses (like lentils and beans) are rich in protein and dietary fiber, they contain less carbohydrate compared to cereals.
- Oilseeds: Oilseeds (such as soybeans and sunflower seeds) are primarily sources of fats and proteins, with minimal carbohydrate content.
- Fruits: Fruits do contain carbohydrates, mainly in the form of sugars, but they generally provide less energy compared to cereals. They are more recognized for their vitamins and minerals.
Conclusion
Cereals stand out as the primary source of carbohydrates due to their high starch content, energy density, and digestibility. This makes them a crucial component of a balanced diet, especially for those needing sustained energy throughout the day.
Which of the following is cultured for pearls?- a)Bhetki
- b)Prawns
- c)Mullets
- d)Oysters
Correct answer is option 'D'. Can you explain this answer?
Which of the following is cultured for pearls?
a)
Bhetki
b)
Prawns
c)
Mullets
d)
Oysters
|
Arnab Goyal answered |
Pearl culture which is not a very old venture is restricted to certain parts of the world only. It includes the culture of oysters in restricted areas and after attaining a particular size and treated specially with the help of scientific equipments and appliances to produce pearl.
Practice Quiz or MCQ (Multiple Choice Questions) with Solutions of Chapter "Animal Husbandry - Improvement in Food Resources" are available for CBSE Class 9 Science and have been compiled as per the syllabus of CBSE Class 9 Science Q. Rearing and breeding of fish in pound, tanks and artificial reservoirs is called :-- a) Aquaculture
- b) Fishing
- c) Pisciculture
- d) Apiculture
Correct answer is option 'C'. Can you explain this answer?
Practice Quiz or MCQ (Multiple Choice Questions) with Solutions of Chapter "Animal Husbandry - Improvement in Food Resources" are available for CBSE Class 9 Science and have been compiled as per the syllabus of CBSE Class 9 Science
Q. Rearing and breeding of fish in pound, tanks and artificial reservoirs is called :-
a)
Aquaculture
b)
Fishing
c)
Pisciculture
d)
Apiculture
|
Aakarsh Verma answered |
Becoz Answer is not A,B neither D That is why answer is C.
What has been a significant outcome of the Green Revolution? - a)Increased reliance on traditional farming methods.
- b)Reduction in the use of chemical fertilizers.
- c)Increased food-grain production.
- d)A shift towards organic farming practices.
Correct answer is option 'C'. Can you explain this answer?
What has been a significant outcome of the Green Revolution?
a)
Increased reliance on traditional farming methods.
b)
Reduction in the use of chemical fertilizers.
c)
Increased food-grain production.
d)
A shift towards organic farming practices.
|
Pankaj Unni answered |
Significant Outcome of the Green Revolution: Increased Food-Grain Production
The Green Revolution, initiated in the 1960s, aimed to enhance agricultural productivity worldwide, particularly in developing countries. One of the most notable outcomes of this movement was a significant increase in food-grain production.
Key Factors Contributing to Increased Production:
- High-Yielding Varieties (HYVs): The introduction of genetically improved seeds, particularly for staple crops like wheat and rice, led to higher yields. These seeds were resistant to pests and diseases, ensuring better harvests.
- Chemical Fertilizers: The widespread use of chemical fertilizers allowed farmers to provide essential nutrients to their crops, promoting growth and maximizing output. This also contributed to improving soil fertility over time.
- Modern Irrigation Techniques: The Green Revolution emphasized the use of advanced irrigation methods, such as drip and sprinkler systems, ensuring that crops received adequate water, even in arid regions.
- Pesticides and Herbicides: The use of chemical pesticides and herbicides helped control pests and weeds, further boosting crop yields and minimizing losses.
Impact on Food Security:
- Reduction of Hunger: The increased food-grain production played a crucial role in alleviating hunger in many regions, particularly in Asia and Latin America, where food shortages were prevalent.
- Economic Growth: Higher agricultural output contributed to the overall economic development of countries, increasing income levels for farmers and enhancing rural livelihoods.
In summary, the Green Revolution significantly transformed agricultural practices, leading to an unprecedented increase in food-grain production, ultimately supporting global food security and economic stability.
The Green Revolution, initiated in the 1960s, aimed to enhance agricultural productivity worldwide, particularly in developing countries. One of the most notable outcomes of this movement was a significant increase in food-grain production.
Key Factors Contributing to Increased Production:
- High-Yielding Varieties (HYVs): The introduction of genetically improved seeds, particularly for staple crops like wheat and rice, led to higher yields. These seeds were resistant to pests and diseases, ensuring better harvests.
- Chemical Fertilizers: The widespread use of chemical fertilizers allowed farmers to provide essential nutrients to their crops, promoting growth and maximizing output. This also contributed to improving soil fertility over time.
- Modern Irrigation Techniques: The Green Revolution emphasized the use of advanced irrigation methods, such as drip and sprinkler systems, ensuring that crops received adequate water, even in arid regions.
- Pesticides and Herbicides: The use of chemical pesticides and herbicides helped control pests and weeds, further boosting crop yields and minimizing losses.
Impact on Food Security:
- Reduction of Hunger: The increased food-grain production played a crucial role in alleviating hunger in many regions, particularly in Asia and Latin America, where food shortages were prevalent.
- Economic Growth: Higher agricultural output contributed to the overall economic development of countries, increasing income levels for farmers and enhancing rural livelihoods.
In summary, the Green Revolution significantly transformed agricultural practices, leading to an unprecedented increase in food-grain production, ultimately supporting global food security and economic stability.
Murrah is a high-yielding breed of :-- a)Sheep
- b)Hen
- c)Buffalo
- d)Cow
Correct answer is option 'C'. Can you explain this answer?
Murrah is a high-yielding breed of :-
a)
Sheep
b)
Hen
c)
Buffalo
d)
Cow
|
|
Aniket Yadav answered |
The Murrah breed of water buffalo is kept for dairy production. It has been used to improve the milk production of dairy buffalo in other countries, such as Italy, Bulgaria and Egypt. The Murrah buffalo is jet black in colour, sometimes with white markings on the face or legs. They typically have short and tightly curved horns. Average milk production is 2200 litres in a lactation period of 310 days.
Which of the following is NOT a desirable agronomic characteristic for crop improvement? - a)Dwarfness in cereals.
- b)Tallness in vegetable crops.
- c)Profuse branching in fodder crops.
- d)Disease resistance in all crops.
Correct answer is option 'B'. Can you explain this answer?
Which of the following is NOT a desirable agronomic characteristic for crop improvement?
a)
Dwarfness in cereals.
b)
Tallness in vegetable crops.
c)
Profuse branching in fodder crops.
d)
Disease resistance in all crops.
|
Let's Tute answered |
Dwarfness is desirable in cereals, but tallness is not ideal for vegetable crops.
What is the primary reason for continuous efforts to improve agricultural and animal husbandry production?- a)To enhance the taste and quality of food products.
- b)To meet the food demands of a rapidly growing population.
- c)To increase export of agricultural products and generate revenue.
- d)To create employment opportunities in rural areas.
Correct answer is option 'B'. Can you explain this answer?
What is the primary reason for continuous efforts to improve agricultural and animal husbandry production?
a)
To enhance the taste and quality of food products.
b)
To meet the food demands of a rapidly growing population.
c)
To increase export of agricultural products and generate revenue.
d)
To create employment opportunities in rural areas.
|
|
Pankaj Unni answered |
Understanding the Need for Improvement in Agriculture and Animal Husbandry
The primary reason for continuous efforts to enhance agricultural and animal husbandry production is to meet the food demands of a rapidly growing population. Here’s a detailed breakdown of why this is crucial:
Population Growth
- The global population is expected to reach approximately 9.7 billion by 2050.
- This rapid increase puts immense pressure on food production systems to provide sufficient quantities of nutritious food.
Food Security
- Ensuring food security is vital for maintaining societal stability and health.
- Continuous improvement in agricultural practices helps to secure reliable food sources for communities worldwide.
Technological Advancements
- Advances in technology, such as precision farming and biotechnology, allow for more efficient food production.
- These innovations lead to higher yields and better quality crops and livestock, essential for feeding more people.
Climate Challenges
- Climate change poses significant challenges to agriculture, including unpredictable weather patterns and resource scarcity.
- Improving agricultural practices helps build resilience against these challenges, ensuring a stable food supply.
Sustainable Practices
- Continuous improvement encourages sustainable farming methods that protect the environment.
- By adopting practices that conserve resources, we can produce food without depleting the Earth’s natural assets.
In conclusion, while enhancing the taste and quality of food, generating revenue through exports, and creating employment are important, the most pressing reason remains the need to meet the food demands of a rapidly growing population. This focus ensures that everyone has access to sufficient and nutritious food, which is fundamental for health and well-being.
The primary reason for continuous efforts to enhance agricultural and animal husbandry production is to meet the food demands of a rapidly growing population. Here’s a detailed breakdown of why this is crucial:
Population Growth
- The global population is expected to reach approximately 9.7 billion by 2050.
- This rapid increase puts immense pressure on food production systems to provide sufficient quantities of nutritious food.
Food Security
- Ensuring food security is vital for maintaining societal stability and health.
- Continuous improvement in agricultural practices helps to secure reliable food sources for communities worldwide.
Technological Advancements
- Advances in technology, such as precision farming and biotechnology, allow for more efficient food production.
- These innovations lead to higher yields and better quality crops and livestock, essential for feeding more people.
Climate Challenges
- Climate change poses significant challenges to agriculture, including unpredictable weather patterns and resource scarcity.
- Improving agricultural practices helps build resilience against these challenges, ensuring a stable food supply.
Sustainable Practices
- Continuous improvement encourages sustainable farming methods that protect the environment.
- By adopting practices that conserve resources, we can produce food without depleting the Earth’s natural assets.
In conclusion, while enhancing the taste and quality of food, generating revenue through exports, and creating employment are important, the most pressing reason remains the need to meet the food demands of a rapidly growing population. This focus ensures that everyone has access to sufficient and nutritious food, which is fundamental for health and well-being.
What is the main aim of crop variety improvement? - a)To increase the aesthetic appeal of crops.
- b)To reduce the dependence on manual labor.
- c)To develop crops with desirable traits like disease resistance and high yields.
- d)To create crops that can be grown in all types of climates.
Correct answer is option 'C'. Can you explain this answer?
What is the main aim of crop variety improvement?
a)
To increase the aesthetic appeal of crops.
b)
To reduce the dependence on manual labor.
c)
To develop crops with desirable traits like disease resistance and high yields.
d)
To create crops that can be grown in all types of climates.
|
|
Let's Tute answered |
Crop improvement targets better yield, disease resistance, and efficient fertilizer use.
What is a major concern associated with the intensive use of natural resources in agriculture? - a)Declining market prices for agricultural products.
- b)Potential damage to the environment and ecological imbalances.
- c)Reduced demand for agricultural labor.
- d)Increased dependence on imported food grains.
Correct answer is option 'B'. Can you explain this answer?
What is a major concern associated with the intensive use of natural resources in agriculture?
a)
Declining market prices for agricultural products.
b)
Potential damage to the environment and ecological imbalances.
c)
Reduced demand for agricultural labor.
d)
Increased dependence on imported food grains.
|
Tejas Iyer answered |
Concerns of Intensive Resource Use in Agriculture
The intensive use of natural resources in agriculture, while essential for meeting the growing food demands, raises significant environmental concerns.
Potential Damage to the Environment
- Soil Degradation: Continuous farming practices can lead to soil erosion, loss of nutrients, and compaction, making it less fertile over time.
- Water Scarcity: Excessive irrigation can deplete local water resources, leading to water scarcity for both agricultural and human needs.
- Chemical Pollution: The heavy use of fertilizers and pesticides can contaminate water bodies, harming aquatic life and affecting human health through water supply contamination.
Ecological Imbalances
- Loss of Biodiversity: Monoculture practices reduce biodiversity, making ecosystems more vulnerable to pests and diseases. This can lead to a decline in pollinator species and disruption of food webs.
- Climate Change: Intensive agriculture contributes to greenhouse gas emissions through practices like deforestation and methane release from livestock, exacerbating global warming.
- Disruption of Natural Habitats: Expanding agricultural lands often encroach on forests and wetlands, leading to habitat loss for numerous species and altering local ecosystems.
Conclusion
While options A, C, and D highlight economic and social implications, option B emphasizes the critical and far-reaching impact of agricultural practices on the environment. Addressing these concerns is vital for sustainable agriculture and the health of our planet.
The intensive use of natural resources in agriculture, while essential for meeting the growing food demands, raises significant environmental concerns.
Potential Damage to the Environment
- Soil Degradation: Continuous farming practices can lead to soil erosion, loss of nutrients, and compaction, making it less fertile over time.
- Water Scarcity: Excessive irrigation can deplete local water resources, leading to water scarcity for both agricultural and human needs.
- Chemical Pollution: The heavy use of fertilizers and pesticides can contaminate water bodies, harming aquatic life and affecting human health through water supply contamination.
Ecological Imbalances
- Loss of Biodiversity: Monoculture practices reduce biodiversity, making ecosystems more vulnerable to pests and diseases. This can lead to a decline in pollinator species and disruption of food webs.
- Climate Change: Intensive agriculture contributes to greenhouse gas emissions through practices like deforestation and methane release from livestock, exacerbating global warming.
- Disruption of Natural Habitats: Expanding agricultural lands often encroach on forests and wetlands, leading to habitat loss for numerous species and altering local ecosystems.
Conclusion
While options A, C, and D highlight economic and social implications, option B emphasizes the critical and far-reaching impact of agricultural practices on the environment. Addressing these concerns is vital for sustainable agriculture and the health of our planet.
Choose the correctly matched pair.- a)Apis mellifera - Indian bee
- b)Catla - Surface feeder
- c)Rohu - Bottom feeder
- d)Peneaus monodon - Fresh water prawn
Correct answer is option 'B'. Can you explain this answer?
a)
Apis mellifera - Indian bee
b)
Catla - Surface feeder
c)
Rohu - Bottom feeder
d)
Peneaus monodon - Fresh water prawn
|
EduRev Class 9 answered |
- Option A: Apis mellifera is not the Indian bee; it is an Italian bee variety commonly used for commercial honey production. The Indian bee is Apis cerana indica.
- Option B: Catla is correctly matched as a surface feeder. In composite fish culture systems, Catla feeds on the surface of the pond.
- Option C: Rohu is incorrectly matched as a bottom feeder. Rohu feeds in the middle-zone of the pond, not at the bottom.
- Option D: Peneaus monodon is incorrectly matched as a fresh water prawn; it is a marine prawn. Macrobrachium rosenbergii is a fresh water prawn.
Therefore, the correctly matched pair is Option B: Catla - Surface feeder.
Why are honeybees so important ?- a)They are excellent pollinators
- b)They show a high degree of social life
- c)They have a stinger
- d)They produce bee wax
Correct answer is option 'A'. Can you explain this answer?
Why are honeybees so important ?
a)
They are excellent pollinators
b)
They show a high degree of social life
c)
They have a stinger
d)
They produce bee wax
|
Naina Mukherjee answered |
Globally there are more honey bees than other types of bee and pollinating insects, so it is the world's most important pollinator of food crops. It is estimated that one third of the food that we consume each day relies on pollination mainly by bees. For crops such as blueberries and almonds, the honey bee plays an essential role in pollination of commercial crops. In addition, honey bees play a significant role in the pollination of other important crops such as cotton and flax. And there are also a number of valuable non-food products produced by the honey bee, such as beeswax used in cleaning and beauty products .
Sometimes fish are cultured with:- a)Maize crop
- b)Rice crop
- c)Wheat crop
- d)Pulses
Correct answer is option 'B'. Can you explain this answer?
Sometimes fish are cultured with:
a)
Maize crop
b)
Rice crop
c)
Wheat crop
d)
Pulses
|
Jyoti Kapoor answered |
A rice-fish system is an integrated rice field or rice field/pond complex, where fish are grown concurrently or alternately with rice. Fish may be deliberately stocked (fish culture), or may enter fields naturally from surrounding water ways when flooding occurs (rice field fisheries), or a bit of both.
Rice-fish systems allow the production of fish and other aquatic animals, from the same rice field area and generally without causing reductions in rice yields. This source of animal protein may be important for household nutrition and farm income.
What is the process called when genetically dissimilar plants are crossed to create new varieties? - a)Genetic engineering
- b)Artificial selection
- c)Hybridization
- d)Mutation breeding
Correct answer is option 'C'. Can you explain this answer?
What is the process called when genetically dissimilar plants are crossed to create new varieties?
a)
Genetic engineering
b)
Artificial selection
c)
Hybridization
d)
Mutation breeding
|
Tanvi Singh answered |
Understanding Hybridization
Hybridization is a process in plant breeding where genetically dissimilar plants are crossed to create new varieties. This approach takes advantage of genetic diversity to develop plants with desirable traits.
Key Aspects of Hybridization:
Conclusion
Hybridization is a key technique in plant breeding that allows for the introduction of new traits and the creation of robust plant varieties. It plays a critical role in modern agriculture by addressing challenges such as climate change and food scarcity.
Hybridization is a process in plant breeding where genetically dissimilar plants are crossed to create new varieties. This approach takes advantage of genetic diversity to develop plants with desirable traits.
Key Aspects of Hybridization:
- Definition: Hybridization involves the deliberate crossing of two different plant varieties or species to produce offspring (hybrids) that possess traits from both parents.
- Purpose: The goal is to enhance specific characteristics such as yield, disease resistance, drought tolerance, and improved nutritional content.
- Types of Hybridization:
- Intraspecific Hybridization: Crossing within the same species.
- Interspecific Hybridization: Crossing between different species.
- Importance in Agriculture: Hybrid varieties often show improved performance over their parent plants, leading to better agricultural productivity and food security.
- Examples: Common examples include the crossing of different corn (maize) varieties to develop hybrids that produce higher yields or have better pest resistance.
Conclusion
Hybridization is a key technique in plant breeding that allows for the introduction of new traits and the creation of robust plant varieties. It plays a critical role in modern agriculture by addressing challenges such as climate change and food scarcity.
Which of the following are Indian cattle?
(i) Bos indicus
(ii) Bos domestica
(iii) Bos bubalis
(iv) Bos vulgaris- a)(i) and (iii)
- b)(i) and (ii)
- c)(ii) and (iii)
- d)(iii) and (iv)
Correct answer is option 'A'. Can you explain this answer?
Which of the following are Indian cattle?
(i) Bos indicus
(ii) Bos domestica
(iii) Bos bubalis
(iv) Bos vulgaris
(i) Bos indicus
(ii) Bos domestica
(iii) Bos bubalis
(iv) Bos vulgaris
a)
(i) and (iii)
b)
(i) and (ii)
c)
(ii) and (iii)
d)
(iii) and (iv)
|
Disha Choudhary answered |
Understanding Indian Cattle
Indian cattle are primarily represented by several distinct species and subspecies that are integral to agriculture and dairy production in India. Among the options provided, let's analyze each one.
1. Bos indicus
- This is the scientific name for the indigenous Indian cattle, commonly known as Zebu.
- They are well adapted to the hot climates of India and are revered for their ability to withstand heat and resist certain diseases.
- Bos indicus is primarily used for milk production, draft work, and other agricultural activities.
2. Bos domestica
- This term is not specifically associated with Indian cattle.
- It generally refers to domestic cattle in a broader sense, which may not be limited to India.
3. Bos bubalis
- This species refers to the domesticated water buffalo.
- Buffaloes are widely raised in India for milk and are essential for many rural economies.
- They are particularly known for their high milk yield and are an integral part of Indian agriculture.
4. Bos vulgaris
- This term is not commonly used in modern taxonomy and is not recognized as a valid species for cattle in India.
- It may refer to domestic cattle in a general sense but lacks specificity.
Conclusion
- Hence, the correct answer is option 'A': (i) Bos indicus and (iii) Bos bubalis, as these are the recognized types of cattle indigenous to India.
- Understanding these cattle is crucial for appreciating their role in Indian agriculture and culture.
Indian cattle are primarily represented by several distinct species and subspecies that are integral to agriculture and dairy production in India. Among the options provided, let's analyze each one.
1. Bos indicus
- This is the scientific name for the indigenous Indian cattle, commonly known as Zebu.
- They are well adapted to the hot climates of India and are revered for their ability to withstand heat and resist certain diseases.
- Bos indicus is primarily used for milk production, draft work, and other agricultural activities.
2. Bos domestica
- This term is not specifically associated with Indian cattle.
- It generally refers to domestic cattle in a broader sense, which may not be limited to India.
3. Bos bubalis
- This species refers to the domesticated water buffalo.
- Buffaloes are widely raised in India for milk and are essential for many rural economies.
- They are particularly known for their high milk yield and are an integral part of Indian agriculture.
4. Bos vulgaris
- This term is not commonly used in modern taxonomy and is not recognized as a valid species for cattle in India.
- It may refer to domestic cattle in a general sense but lacks specificity.
Conclusion
- Hence, the correct answer is option 'A': (i) Bos indicus and (iii) Bos bubalis, as these are the recognized types of cattle indigenous to India.
- Understanding these cattle is crucial for appreciating their role in Indian agriculture and culture.
Which of the following species is an Indian cow?- a)Bos domestica
- b)Bos indicus
- c)Bos vulgaris
- d)Bos bubalis
Correct answer is option 'B'. Can you explain this answer?
Which of the following species is an Indian cow?
a)
Bos domestica
b)
Bos indicus
c)
Bos vulgaris
d)
Bos bubalis
|
|
Vikram Khanna answered |
A zebu or Bos indicus or Bos taurus indicus, sometimes known as indicine cattle or humped cattle, is a species or subspecies of domestic cattle originating in the Indian Subcontinent. Zebu are characterised by a fatty hump on their shoulders, a large dewlap, and sometimes drooping ears. They are well adapted to withstanding high temperatures, and are farmed throughout the tropical countries, both as pure zebu and as hybrids with taurine cattle, the other main type of domestic cattle.
Which one of the following is the indigenous breed of chickens :-- a)Plymouth rock
- b)White leghorn
- c)Aseel
- d)Rhode island red
Correct answer is option 'C'. Can you explain this answer?
Which one of the following is the indigenous breed of chickens :-
a)
Plymouth rock
b)
White leghorn
c)
Aseel
d)
Rhode island red
|
Nilanjan Sharma answered |
There are only four pure Indian breeds of chicken available.
Aseel. It is noted for its pugnacity, high stamina, majestic gait and dogged fighting qualities.
Chittagong. It is also known as Malay.
Kadaknath. The skin, beak, shanks, toes and soles of feet are slate-like in colour.
Busra.
Aseel. It is noted for its pugnacity, high stamina, majestic gait and dogged fighting qualities.
Chittagong. It is also known as Malay.
Kadaknath. The skin, beak, shanks, toes and soles of feet are slate-like in colour.
Busra.
Leghorn is an exotic breed of:- a)Marine prawn
- b)Milch animal
- c)Poultry
- d)Drought animal
Correct answer is option 'C'. Can you explain this answer?
Leghorn is an exotic breed of:
a)
Marine prawn
b)
Milch animal
c)
Poultry
d)
Drought animal
|
Shubham Majumdar answered |
Leghorn is probably the best egg-laying breed to introduce to tropical Countries, if conditions are not too harsh. Eggs are produced at a lower price and the large comb and wattles, naked legs and white feathers are all factors favouring thermo-tolerance. Where a hot climate and insufficient feeding are limiting factors, Leghorn-derived breeds are more suitable and may also be utilised to improve the genetic pool of local strains.
Which of the following statements about intercropping is true? - a)It involves growing the same crop repeatedly in a field.
- b)It requires the use of genetically modified seeds.
- c)It involves growing different crops in a specific pattern to maximize nutrient utilization.
- d)It is only suitable for large-scale industrial farms.
Correct answer is option 'C'. Can you explain this answer?
Which of the following statements about intercropping is true?
a)
It involves growing the same crop repeatedly in a field.
b)
It requires the use of genetically modified seeds.
c)
It involves growing different crops in a specific pattern to maximize nutrient utilization.
d)
It is only suitable for large-scale industrial farms.
|
|
Pankaj Unni answered |
Understanding Intercropping
Intercropping is an agricultural practice that involves cultivating two or more crops simultaneously in the same field. This method is designed to optimize land use and improve overall yields.
Key Benefits of Intercropping
- Diverse Crop Growth: By planting different crops together, intercropping allows for better utilization of resources such as sunlight, water, and nutrients. Different plants often have varying root depths and nutrient requirements, which can complement each other.
- Pest and Disease Control: Mixing crops can reduce the likelihood of pest infestations and disease outbreaks. Some plants can deter pests that would otherwise target a specific crop.
- Soil Health Improvement: Different crops contribute to soil health in various ways. For instance, legumes can fix nitrogen in the soil, enhancing fertility for subsequent crops.
Why Other Options are Incorrect
- Option A: Intercropping does not involve growing the same crop repeatedly; that practice is known as monoculture, which can lead to soil depletion and increased vulnerability to pests.
- Option B: While genetically modified seeds can be used in intercropping, they are not a requirement. Many traditional and organic methods of intercropping use conventional seeds.
- Option D: Intercropping is versatile and can be practiced on various scales, from small family farms to large industrial farms. It is not limited to any specific farm size.
Conclusion
Intercropping is a sustainable agricultural practice that enhances productivity and promotes ecological balance by growing different crops in a specific pattern, making option 'C' the correct statement.
Intercropping is an agricultural practice that involves cultivating two or more crops simultaneously in the same field. This method is designed to optimize land use and improve overall yields.
Key Benefits of Intercropping
- Diverse Crop Growth: By planting different crops together, intercropping allows for better utilization of resources such as sunlight, water, and nutrients. Different plants often have varying root depths and nutrient requirements, which can complement each other.
- Pest and Disease Control: Mixing crops can reduce the likelihood of pest infestations and disease outbreaks. Some plants can deter pests that would otherwise target a specific crop.
- Soil Health Improvement: Different crops contribute to soil health in various ways. For instance, legumes can fix nitrogen in the soil, enhancing fertility for subsequent crops.
Why Other Options are Incorrect
- Option A: Intercropping does not involve growing the same crop repeatedly; that practice is known as monoculture, which can lead to soil depletion and increased vulnerability to pests.
- Option B: While genetically modified seeds can be used in intercropping, they are not a requirement. Many traditional and organic methods of intercropping use conventional seeds.
- Option D: Intercropping is versatile and can be practiced on various scales, from small family farms to large industrial farms. It is not limited to any specific farm size.
Conclusion
Intercropping is a sustainable agricultural practice that enhances productivity and promotes ecological balance by growing different crops in a specific pattern, making option 'C' the correct statement.
Which one of the following is milch breed of cow ?- a)Nageri
- b)Malvi
- c)Gir
- d)Hallikar
Correct answer is option 'C'. Can you explain this answer?
Which one of the following is milch breed of cow ?
a)
Nageri
b)
Malvi
c)
Gir
d)
Hallikar
|
Amrita Mishra answered |
The Gir or Gyr is one of the principal Zebu breeds originating in India. It has been used locally in the improvement of other breeds including the Red Sindhi and the Sahiwal. It is very known for its milk producing qualities and is often bred with Friesian cows to make the Girolando breed.
What is the primary factor influencing a farmer's adoption of different farming practices and technologies? - a)Government regulations and policies.
- b)Availability of skilled agricultural labor.
- c)Financial resources and purchasing capacity.
- d)Personal preferences and traditional knowledge.
Correct answer is option 'C'. Can you explain this answer?
What is the primary factor influencing a farmer's adoption of different farming practices and technologies?
a)
Government regulations and policies.
b)
Availability of skilled agricultural labor.
c)
Financial resources and purchasing capacity.
d)
Personal preferences and traditional knowledge.
|
Imk Pathshala answered |
Farmers’ financial capacity determines their ability to invest in better practices.
What is a significant advantage of developing crops with shorter maturity durations? - a)Reduced need for irrigation.
- b)Allows farmers to grow multiple rounds of crops in a year.
- c)Enhanced flavor and nutritional value.
- d)Elimination of the need for pesticides.
Correct answer is option 'B'. Can you explain this answer?
What is a significant advantage of developing crops with shorter maturity durations?
a)
Reduced need for irrigation.
b)
Allows farmers to grow multiple rounds of crops in a year.
c)
Enhanced flavor and nutritional value.
d)
Elimination of the need for pesticides.
|
|
EduRev Class 9 answered |
Short-duration crops increase annual productivity by enabling multiple harvests.
Which of the following is a disadvantage of using chemical fertilizers excessively? - a)Increased biodiversity in the soil.
- b)Enhanced activity of beneficial microorganisms.
- c)Water pollution and potential harm to soil fertility.
- d)Reduced crop yields in the long term.
Correct answer is option 'C'. Can you explain this answer?
Which of the following is a disadvantage of using chemical fertilizers excessively?
a)
Increased biodiversity in the soil.
b)
Enhanced activity of beneficial microorganisms.
c)
Water pollution and potential harm to soil fertility.
d)
Reduced crop yields in the long term.
|
|
EduRev Class 9 answered |
Excessive use of fertilizers damages soil and causes water pollution.
Cattle husbandry is done for title following purposes
(i) Milk production
(ii) Agricultural work
(iii) Meat production
(iv) Egg production- a)(i), (ii) and (iii)
- b)(ii), (iii) and (iv)
- c)(iii) and (iv)
- d)(i) and (iv)
Correct answer is option 'A'. Can you explain this answer?
Cattle husbandry is done for title following purposes
(i) Milk production
(ii) Agricultural work
(iii) Meat production
(iv) Egg production
(i) Milk production
(ii) Agricultural work
(iii) Meat production
(iv) Egg production
a)
(i), (ii) and (iii)
b)
(ii), (iii) and (iv)
c)
(iii) and (iv)
d)
(i) and (iv)
|
|
Saina Kapoor answered |
Cattle husbandry is defined as the management of cattle by humans for monetary gains, yielding good quality and quantity milk, help in agriculture and farming and give a huge quantity of meat.
The milch animals like buffaloes, cow, she-goat gives milk and the other cattle which do not give milk like bulls are called draught animals as they help in farming like tilling, cart driving and irrigation.
Cattle husbandry includes only cattle and not hen and duck hence no egg production happens. therefore (i), (ii) and (iii) points are correct but the (iv) point is incorrect.
Main sugar present in the honey is :-- a)Maltose
- b)Levulose
- c)Dextrose
- d)Ribose
Correct answer is option 'B'. Can you explain this answer?
Main sugar present in the honey is :-
a)
Maltose
b)
Levulose
c)
Dextrose
d)
Ribose
|
Akshat Malik answered |
Fructose, a monosaccharide found in honey and many sweet fruits; it is used in solution as a fluid and nutrient replenisher. Also called levulose and fruit sugar.
Why is manure considered beneficial for soil fertility? - a)It provides a concentrated dose of chemical nutrients.
- b)It enriches the soil with organic matter, improves soil structure, and enhances water retention.
- c)It is readily available and requires no processing.
- d)It eliminates the need for irrigation in all types of soil.
Correct answer is option 'B'. Can you explain this answer?
Why is manure considered beneficial for soil fertility?
a)
It provides a concentrated dose of chemical nutrients.
b)
It enriches the soil with organic matter, improves soil structure, and enhances water retention.
c)
It is readily available and requires no processing.
d)
It eliminates the need for irrigation in all types of soil.
|
|
Pankaj Unni answered |
Benefits of Manure for Soil Fertility
Manure is a powerful natural resource that enhances soil fertility through various mechanisms. Here is an in-depth look at why manure is particularly beneficial:
Enrichment of Organic Matter
- Manure is rich in organic matter, which is crucial for maintaining soil health.
- Organic matter helps to create a robust microbial ecosystem, essential for nutrient cycling.
Improvement of Soil Structure
- The addition of manure improves soil structure by promoting aggregation.
- Better soil structure allows for improved aeration and root penetration, leading to healthier plants.
Enhancement of Water Retention
- Manure increases the soil's ability to retain moisture.
- This is particularly important in dry conditions, reducing the need for frequent irrigation.
Source of Nutrients
- While manure is not a concentrated source of nutrients like synthetic fertilizers, it provides a balanced array of essential nutrients, including nitrogen, phosphorus, and potassium.
- These nutrients are released slowly, supporting plants over time and reducing the risk of nutrient leaching.
Environmental Benefits
- Using manure helps recycle waste, reducing pollution from livestock operations.
- It contributes to sustainable farming practices by minimizing reliance on chemical fertilizers.
In summary, manure is considered beneficial for soil fertility because it enriches the soil with organic matter, improves soil structure, and enhances water retention. These attributes play a vital role in promoting healthy plant growth and sustainable agricultural practices.
Manure is a powerful natural resource that enhances soil fertility through various mechanisms. Here is an in-depth look at why manure is particularly beneficial:
Enrichment of Organic Matter
- Manure is rich in organic matter, which is crucial for maintaining soil health.
- Organic matter helps to create a robust microbial ecosystem, essential for nutrient cycling.
Improvement of Soil Structure
- The addition of manure improves soil structure by promoting aggregation.
- Better soil structure allows for improved aeration and root penetration, leading to healthier plants.
Enhancement of Water Retention
- Manure increases the soil's ability to retain moisture.
- This is particularly important in dry conditions, reducing the need for frequent irrigation.
Source of Nutrients
- While manure is not a concentrated source of nutrients like synthetic fertilizers, it provides a balanced array of essential nutrients, including nitrogen, phosphorus, and potassium.
- These nutrients are released slowly, supporting plants over time and reducing the risk of nutrient leaching.
Environmental Benefits
- Using manure helps recycle waste, reducing pollution from livestock operations.
- It contributes to sustainable farming practices by minimizing reliance on chemical fertilizers.
In summary, manure is considered beneficial for soil fertility because it enriches the soil with organic matter, improves soil structure, and enhances water retention. These attributes play a vital role in promoting healthy plant growth and sustainable agricultural practices.
Apart from food availability, what other factor is crucial for ensuring food security? - a)Advanced agricultural technology.
- b)Access to food through purchasing power.
- c)Government subsidies for farmers.
- d)Favorable weather conditions.
Correct answer is option 'B'. Can you explain this answer?
Apart from food availability, what other factor is crucial for ensuring food security?
a)
Advanced agricultural technology.
b)
Access to food through purchasing power.
c)
Government subsidies for farmers.
d)
Favorable weather conditions.
|
|
EduRev Class 9 answered |
Food security depends on food availability and the ability to buy it.
What is the primary objective of mixed cropping? - a)To maximize the use of chemical fertilizers.
- b)To reduce the risk of crop failure and provide insurance against losses.
- c)To create visually appealing patterns in the field.
- d)To increase the complexity of farming practices.
Correct answer is option 'B'. Can you explain this answer?
What is the primary objective of mixed cropping?
a)
To maximize the use of chemical fertilizers.
b)
To reduce the risk of crop failure and provide insurance against losses.
c)
To create visually appealing patterns in the field.
d)
To increase the complexity of farming practices.
|
|
Imk Pathshala answered |
Mixed cropping minimizes risks by growing diverse crops together.
Tick the viral disease of cattle :-- a)Foot and mouth disease
- b)Anthrax
- c)Aspergillosis
- d)T.B.
Correct answer is option 'A'. Can you explain this answer?
Tick the viral disease of cattle :-
a)
Foot and mouth disease
b)
Anthrax
c)
Aspergillosis
d)
T.B.
|
|
Sankar Bajaj answered |
Foot and mouth disease:
Foot and mouth disease (FMD) is a viral disease that affects cattle and other cloven-hoofed animals such as pigs, sheep, and goats. It is caused by the FMD virus, which belongs to the Picornaviridae family.
Transmission and Symptoms:
FMD is highly contagious and spreads through direct contact with infected animals, their secretions, or contaminated objects. The virus can survive for long periods in the environment, making it easy to spread from one animal to another.
The symptoms of FMD include fever, blisters or vesicles on the tongue, lips, gums, and hooves, excessive salivation, lameness, and decreased milk production in lactating cattle. Infected animals also experience weight loss and reduced appetite.
Impact on Cattle Industry:
FMD has a significant impact on the cattle industry due to its highly contagious nature and adverse economic consequences. Infected animals experience reduced productivity and may even die as a result of the disease. Moreover, countries that are affected by FMD often face trade restrictions on their livestock and animal products, leading to financial losses for farmers and the agricultural sector as a whole.
Prevention and Control Measures:
To prevent the spread of FMD, several control measures are implemented. Vaccination campaigns are carried out in susceptible populations to reduce the incidence of the disease. Strict biosecurity measures, such as quarantine and movement restrictions, are also enforced to limit the transmission of the virus.
In case of an outbreak, affected animals are culled to prevent further spread of the disease. Disinfection of premises, equipment, and vehicles is crucial to eliminate the virus from the environment. Public awareness campaigns are conducted to educate farmers and the general public about the importance of reporting suspected cases and following preventive measures.
In conclusion, foot and mouth disease is a viral disease that affects cattle. It is highly contagious and can cause significant economic losses in the agricultural sector. Vaccination, biosecurity measures, and prompt control measures are essential in preventing and controlling the spread of FMD.
Foot and mouth disease (FMD) is a viral disease that affects cattle and other cloven-hoofed animals such as pigs, sheep, and goats. It is caused by the FMD virus, which belongs to the Picornaviridae family.
Transmission and Symptoms:
FMD is highly contagious and spreads through direct contact with infected animals, their secretions, or contaminated objects. The virus can survive for long periods in the environment, making it easy to spread from one animal to another.
The symptoms of FMD include fever, blisters or vesicles on the tongue, lips, gums, and hooves, excessive salivation, lameness, and decreased milk production in lactating cattle. Infected animals also experience weight loss and reduced appetite.
Impact on Cattle Industry:
FMD has a significant impact on the cattle industry due to its highly contagious nature and adverse economic consequences. Infected animals experience reduced productivity and may even die as a result of the disease. Moreover, countries that are affected by FMD often face trade restrictions on their livestock and animal products, leading to financial losses for farmers and the agricultural sector as a whole.
Prevention and Control Measures:
To prevent the spread of FMD, several control measures are implemented. Vaccination campaigns are carried out in susceptible populations to reduce the incidence of the disease. Strict biosecurity measures, such as quarantine and movement restrictions, are also enforced to limit the transmission of the virus.
In case of an outbreak, affected animals are culled to prevent further spread of the disease. Disinfection of premises, equipment, and vehicles is crucial to eliminate the virus from the environment. Public awareness campaigns are conducted to educate farmers and the general public about the importance of reporting suspected cases and following preventive measures.
In conclusion, foot and mouth disease is a viral disease that affects cattle. It is highly contagious and can cause significant economic losses in the agricultural sector. Vaccination, biosecurity measures, and prompt control measures are essential in preventing and controlling the spread of FMD.
Catla and Rohu are the examples of :-- a)Exotic fresh water fishes
- b)Indigrenous fresh water fishes
- c)Indigenous marine water fishes
- d)Exotic marine water fishes
Correct answer is option 'B'. Can you explain this answer?
Catla and Rohu are the examples of :-
a)
Exotic fresh water fishes
b)
Indigrenous fresh water fishes
c)
Indigenous marine water fishes
d)
Exotic marine water fishes
|
Maanvi Desai answered |
Introduction to Catla and Rohu
Catla and Rohu are two important species of fish found in freshwater ecosystems, particularly in South Asia, and are widely recognized for their ecological and economic significance.
What are Indigenous Freshwater Fishes?
- Indigenous freshwater fishes are species that are native to a specific region and have evolved in that environment over time.
- They play a crucial role in maintaining the health and balance of aquatic ecosystems.
Characteristics of Catla and Rohu
- Catla (Catla catla):
- Known for its large size and fast growth rate.
- Typically found in rivers and lakes of the Indian subcontinent.
- It is a surface feeder, primarily consuming plankton.
- Rohu (Labeo rohita):
- A popular fish in Indian cuisine, known for its flavorful flesh.
- Prefers to inhabit rivers and ponds, often found in schools.
- Feeds on aquatic plants and detritus, contributing to the ecosystem's nutrient cycle.
Importance of Indigenous Freshwater Fishes
- Ecological Role:
- Both Catla and Rohu are integral to the food web, supporting various predators and influencing the biodiversity of freshwater habitats.
- Economic Value:
- They are important for local fisheries and aquaculture, providing livelihoods to many communities.
- Their cultivation supports food security in the region.
Conclusion
In summary, Catla and Rohu exemplify indigenous freshwater fishes, showcasing the significance of native species in both ecological and economic contexts. Understanding their role helps in the conservation and sustainable management of freshwater resources.
Catla and Rohu are two important species of fish found in freshwater ecosystems, particularly in South Asia, and are widely recognized for their ecological and economic significance.
What are Indigenous Freshwater Fishes?
- Indigenous freshwater fishes are species that are native to a specific region and have evolved in that environment over time.
- They play a crucial role in maintaining the health and balance of aquatic ecosystems.
Characteristics of Catla and Rohu
- Catla (Catla catla):
- Known for its large size and fast growth rate.
- Typically found in rivers and lakes of the Indian subcontinent.
- It is a surface feeder, primarily consuming plankton.
- Rohu (Labeo rohita):
- A popular fish in Indian cuisine, known for its flavorful flesh.
- Prefers to inhabit rivers and ponds, often found in schools.
- Feeds on aquatic plants and detritus, contributing to the ecosystem's nutrient cycle.
Importance of Indigenous Freshwater Fishes
- Ecological Role:
- Both Catla and Rohu are integral to the food web, supporting various predators and influencing the biodiversity of freshwater habitats.
- Economic Value:
- They are important for local fisheries and aquaculture, providing livelihoods to many communities.
- Their cultivation supports food security in the region.
Conclusion
In summary, Catla and Rohu exemplify indigenous freshwater fishes, showcasing the significance of native species in both ecological and economic contexts. Understanding their role helps in the conservation and sustainable management of freshwater resources.
Broilers are maintained for getting :-- a)Milk
- b)Egg
- c)Meat
- d)Leather
Correct answer is option 'C'. Can you explain this answer?
Broilers are maintained for getting :-
a)
Milk
b)
Egg
c)
Meat
d)
Leather
|
|
Nilanjan Sharma answered |
A broiler is any chicken that is bred and raised specifically for meat production. Many typical broilers have white feathers and yellowish skin. Most commercial broilers reach slaughter-weight between four and seven weeks of age, although slower growing breeds reach slaughter-weight at approximately 14 weeks of age.
Which of the following is an exotic breed of cow?- a)Red sindhi
- b)Gir
- c)Sahiwal
- d)Jersey
Correct answer is option 'D'. Can you explain this answer?
Which of the following is an exotic breed of cow?
a)
Red sindhi
b)
Gir
c)
Sahiwal
d)
Jersey
|
|
Arka Dey answered |
Exotic cattle were first introduced into this region by colonial farmers. Thus, the origin of exotic cattle is generally traced back to Europe. The most common exotic dairy breeds in the region are Friesian, Holstein, Ayrshire, Jersey, Guernsey and Sahiwal. However, the Friesian breed predominates.
Which of the following is the high milk yielding variety of cow?- a)Jamunapari
- b)Murrah
- c)Holstein
- d)Kathiyabari
Correct answer is option 'C'. Can you explain this answer?
Which of the following is the high milk yielding variety of cow?
a)
Jamunapari
b)
Murrah
c)
Holstein
d)
Kathiyabari
|
|
Arvind Singh answered |
Holstein-Friesian Cattle
Holstein Cattle Breed. Holstein full name is Holstein-Friesian Cattle or Friesian Cattle that is Holstein amazing milk producer and it is the highest milk production dairy farm animal in the world. This produced milk. This dairy cattle produced milk 32,740 kg in 365 days.
Which of the following is NOT a biotic factor that can cause storage losses in agricultural produce?- a)Insects
- b)Rodents
- c)Fungi
- d)Inappropriate temperature
Correct answer is option 'D'. Can you explain this answer?
Which of the following is NOT a biotic factor that can cause storage losses in agricultural produce?
a)
Insects
b)
Rodents
c)
Fungi
d)
Inappropriate temperature
|
|
EduRev Class 9 answered |
Temperature and moisture are abiotic factors, while insects, rodents, and fungi are biotic.
"एक तिनका" कविता का मूल -भाव क्या है?- a)घमंडी की विवशता
- b)अहंकार
- c)त्याग
- d)परोपकार
Correct answer is option 'A'. Can you explain this answer?
"एक तिनका" कविता का मूल -भाव क्या है?
a)
घमंडी की विवशता
b)
अहंकार
c)
त्याग
d)
परोपकार
|
|
Meghana verma answered |
Explanation:
Identifying the correct answer:
The correct answer to this question is option 'A' as it is asking for the punctuation mark that is used to indicate a question. The punctuation mark that is used to indicate a question is a question mark (?).
Explanation in detail:
- The symbol "?" is known as a question mark and is used at the end of a sentence to indicate a direct question.
- It is important to use a question mark at the end of a sentence when asking a question to make it clear to the reader that a question is being posed.
- The question mark is a vital punctuation mark in written language as it helps to convey the tone and intention of a sentence.
- In this case, the question is asking for the specific punctuation mark used to indicate a question, which is why the correct answer is option 'A' (question mark).
Conclusion:
In conclusion, the correct answer to this question is option 'A' as a question mark is the punctuation mark used to indicate a question. It is important to use the correct punctuation in writing to ensure clarity and convey meaning effectively.
Identifying the correct answer:
The correct answer to this question is option 'A' as it is asking for the punctuation mark that is used to indicate a question. The punctuation mark that is used to indicate a question is a question mark (?).
Explanation in detail:
- The symbol "?" is known as a question mark and is used at the end of a sentence to indicate a direct question.
- It is important to use a question mark at the end of a sentence when asking a question to make it clear to the reader that a question is being posed.
- The question mark is a vital punctuation mark in written language as it helps to convey the tone and intention of a sentence.
- In this case, the question is asking for the specific punctuation mark used to indicate a question, which is why the correct answer is option 'A' (question mark).
Conclusion:
In conclusion, the correct answer to this question is option 'A' as a question mark is the punctuation mark used to indicate a question. It is important to use the correct punctuation in writing to ensure clarity and convey meaning effectively.
Inland fishery refers to- a)deep sea fisheries
- b)capturing fish from sea coast
- c)culturing fish in freshwater bodies
- d)extraction of oil from fish
Correct answer is option 'C'. Can you explain this answer?
Inland fishery refers to
a)
deep sea fisheries
b)
capturing fish from sea coast
c)
culturing fish in freshwater bodies
d)
extraction of oil from fish
|
Trisha Vashisht answered |
Inland fishery refers to the practice of culturing fish in freshwater bodies. Here is a detailed explanation of what inland fishery entails:
Definition: Inland fishery refers to the cultivation and management of fish species in freshwater environments such as rivers, lakes, ponds, and reservoirs.
Definition: Inland fishery refers to the cultivation and management of fish species in freshwater environments such as rivers, lakes, ponds, and reservoirs.
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