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All questions of July Week 2 for Class 10 Exam

Which geometric figures are always similar?​
  • a)
    Circles
  • b)
    Circles and all regular polygons
  • c)
    Circles and triangles
  • d)
    Regular polygons
Correct answer is option 'B'. Can you explain this answer?

Raghav Bansal answered
It can be found that circles map one  onto another.So they are similar figures. A regular polygon is a polygon which has the same sides and equal measures of angles. So they are also similar.
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Can you explain the answer of this question below:

Haemoglobin is –

  • A:

    Vitamin

  • B:

    Skin pigment

  • C:

    Blood carrier

  • D:

    Respiratory pigment

The answer is D.

Krishna Iyer answered
the hemoglobin increases the oxygen carrying capacity of blood. In humans and most other vertebrates, the most common respiratory pigment is a protein called hemoglobin.

ΔABC ~ ΔPQR, ∠B = 50° and ∠C = 70° then ∠P is equal to​
  • a)
    50°
  • b)
    60°
  • c)
    40°
  • d)
    70°
Correct answer is option 'B'. Can you explain this answer?

Radha Iyer answered
Similar triangles have corresponding angles equal. So Angle Q=Angle B = 50° and Angle R = Angle C = 70° . So by angle sum property, Angle P+Angle Q +Angle R = 180°
Angle P=180° - 50° - 70° = 60°

What is the name given to the species which are not found after searches of known or likely areas where they may occur:-
  • a)
    Endemic species
  • b)
    Rare species
  • c)
    Endangered species
  • d)
    Extinct species
Correct answer is option 'D'. Can you explain this answer?

Damini nambiar answered
Extinct Species: Furthermore, there are some extinct species. This includes species which are not found after searches of known or likely areas where they may occur. For example, the Asiatic cheetah, pink head duck etc.

 Two congruent triangles are actually similar triangles with the ratio of corresponding sides as.​
  • a)
    1:2
  • b)
    1:1
  • c)
    1:3
  • d)
    2:1
Correct answer is option 'B'. Can you explain this answer?

Pushkar tiwari answered
Similar Triangles and Corresponding Sides

Similar triangles are those triangles that have the same shape but may have different sizes. When two triangles are similar, the corresponding angles are the same, and the corresponding sides are proportional. In other words, the ratio of the lengths of the corresponding sides is the same for all pairs of corresponding sides. This ratio is called the scale factor.

Given the statement that "Two congruent triangles are actually similar triangles with the ratio of corresponding sides as," we are asked to determine the scale factor for the corresponding sides of the two triangles.

Option B is the correct answer, and the scale factor is 1:1. This means that the corresponding sides of the two triangles are equal in length.

Explanation of Other Options:

a) 1:2 - This means that the corresponding sides of one triangle are twice as long as the corresponding sides of the other triangle. Therefore, the triangles are not congruent, but they are similar.

c) 1:3 - This means that the corresponding sides of one triangle are three times as long as the corresponding sides of the other triangle. Therefore, the triangles are not congruent, but they are similar.

d) 2:1 - This means that the corresponding sides of one triangle are half as long as the corresponding sides of the other triangle. Therefore, the triangles are not congruent, but they are similar.

Conclusion:

In summary, when two triangles are congruent, they are also similar with a scale factor of 1:1. This means that the corresponding sides of the triangles are equal in length.

Can you explain the answer of this question below:

The maximum affinity of haemoglobin is with –

  • A:

    Carbon monoxide

  • B:

    Carbondioxide

  • C:

    Oxygen

  • D:

    Ammonia

The answer is A.

Naina Sharma answered
Hemoglobin in humans has a very high affinity for carbon monoxide, forming carboxyhemoglobin which is a very bright red in color. Carbon monoxide is thus problematic for humans because it has affinity higher than that of oxygen.

How many species of Fauna are found in India till today? 
  • a)
    81000
  • b)
    47000
  • c)
    15000
  • d)
    None of them
Correct answer is option 'A'. Can you explain this answer?

Raghav Bansal answered
Nearly 1,500 plant species are considered endangered. Over 81,000 species of fauna and 47,000 species of flora are found in this country so far. Of the estimated 47,000 plant species, about 15,000 flowering species are endemic (indigenous) to India.

Which of these is not a raw material for photosynthesis?
  • a)
     Carbon dioxide
  • b)
    Water
  • c)
    Oxygen
  • d)
    None of these
Correct answer is option 'C'. Can you explain this answer?

Krishna Iyer answered
organism prepare their own food with the help of simple inorganic materials like CO2,H2O in sunlight with the help of chlorophyll. Thus, it doesn’t involve oxygen in the process.

Oxygen in lungs ultimately reaches –
  • a)
    Alveoli
  • b)
    Trachea
  • c)
    Bronchus
  • d)
    Bronchioles
Correct answer is option 'D'. Can you explain this answer?

Nk Classes answered
The alveoli are the final branchings of the respiratory tree and act as the primary gas exchange units of the lung. Inhaled oxygen enters the lungs and reaches the alveoli. 

The narrowest and most numberous tubes of lungs are termed as –
  • a)
    Bronchus
  • b)
    Bronchioles
  • c)
    Alveoli
  • d)
    None of these
Correct answer is option 'B'. Can you explain this answer?

Vikas Kumar answered
Bronchiole is a fine respiratory tube in the lungs of reptiles, birds and mammals. It is formed by the subdivision of a bronchus. 

Plant can respire in :
  • a)
    Dark
  • b)
    Light
  • c)
    Both in light and dark
  • d)
    Morning
Correct answer is option 'C'. Can you explain this answer?

Arun Sharma answered
Respiration is constitutive process that occurs in all tissues. Unlike photosynthesis that can happen only in the presence of sunlight, respiration in plant occurs all time. So, the answer is - both light and dark.

In right triangle ABC, right angled at A,
A perpendicular is dropped from A to BC, meeting BC at D. Then which of the following is true?​
  • a)
    ΔADC ~ ΔABD
  • b)
    ΔDCA ~ ΔDABD
  • c)
    ΔDAC ~ ΔDABD
  • d)
    ΔDAC ~ ΔDABA
Correct answer is option 'D'. Can you explain this answer?

Naina kapoor answered
Explanation:

  • Let's draw the diagram first.

  • From the diagram, we can see that triangle ABD and triangle ACD are both right triangles.

  • Therefore, we can use the Pythagorean theorem to find their sides.

  • Let's assume that AB = b, AC = c, and BC = a.

  • Using Pythagorean theorem, we get:


    • AB² + BD² = AD² (for triangle ABD)

    • AC² + CD² = AD² (for triangle ACD)

    • BC² = AB² + AC² (by Pythagoras theorem)


  • Now, we can simplify the above equations to get:


    • BD² = AD² - AB² = (AC² + CD²) - AB²

    • CD² = AD² - AC² = (AB² + BD²) - AC²


  • Substituting the value of BD² and CD² in the above equations, we get:


    • AB² + (AC² + CD² - AB²) = AD²

    • AC² + (AB² + BD² - AC²) = AD²


  • After simplifying, we get:


    • AC² = AD² - AB²

    • AB² = AD² - AC²


  • Therefore, we can say that triangle DAC is similar to triangle DAB by the Angle-Angle-Similarity criterion.

  • Thus, option D is the correct answer.

In which one of the following states is Periyar Tiger Reserves Located?
  • a)
    Rajasthan
  • b)
    Assam
  • c)
    Uttaranchal
  • d)
    Kerala
Correct answer is option 'D'. Can you explain this answer?

Amit Sharma answered
Periyar National Park and Wildlife Sanctuary (PNP) is a protected area near Thekkady in the districts of Idukki, Kottayam and Pathanamthitta in Kerala, India. It is notable as an elephant reserve and a tiger reserve. The protected area covers an area of 925 km2 (357 sq mi). 305 km2 (118 sq mi) of the core zone was declared as the Periyar National Park in 1982. The park is a repository of rare, endemic and endangered flora and fauna and forms the major watershed of two important rivers of Kerala, the Periyar and the Pamba.

In which year, the Indian Wildlife (Protection) Act was implemented? 
  • a)
    1970
  • b)
    1971
  • c)
    1972
  • d)
    1974
Correct answer is option 'C'. Can you explain this answer?

Rahul Kapoor answered
The Wildlife Protection Act, 1972 is an Act of the Parliament of India enacted for protection of plants and animal species. Before 1972, India only had five designated national parks.

Which one of the following is a medicinal plant used to treat some types of cancer? 
  • a)
    Himalayan Yew
  • b)
    Himalayan Oak
  • c)
    Madhuca insignis
  • d)
    Hubbardia heptaneuron
Correct answer is option 'A'. Can you explain this answer?

Anita Menon answered
The Himalayan Yew is a medicinal plant found in various parts of Himachal Pradesh and Arunachal Pradesh in the Himalayan region. A chemical compound called ‘taxol’ is extracted from its bark, needles, twigs and roots. This has been successfully used to treat some types of cancers. The species is, therefore, over-utilised for manufacturing cancer fighting drug. The drug is now the biggest selling anti-cancer drug in the world. The species of Himalayan Yew is, therefore, under great threat due to over-exploitation on account of its medicinal value.

Which one of the following is located in West Bengal?
  • a)
    Corbett National Park
  • b)
    Sundarbans National Park
  • c)
    Sariska Wildlife Sanctuary
  • d)
    Bandhangarh National Park
Correct answer is option 'B'. Can you explain this answer?

Surbhi Rane answered
The Sunderbans National Park is a tiger and biosphere reserve located in the Sunderbans delta in the state of West Bengal (India). The Sunderbans is named after the Sundari trees which are found in bulk in this area. The park was established as a national park on 4th May 1984 as earlier it was created as wildlife sanctuary in 1977, designated as the core area of Sunderbans Tiger Reserve.

Which of the following conservation strategies do not directly involve community participation? 
  • a)
    Joint forest Management
  • b)
    Beej Bachao Andolan
  • c)
    Chipko Movement
  • d)
    Demarcation of wild life Sanctuaries
Correct answer is option 'D'. Can you explain this answer?

Amrutha Kapoor answered
(i) Grazing and fuelwood collection are not valid reasons for the depletion of flora and fauna
(ii) Demarcation of Wildlife Sanctuaries do not directly involve community participation.  

Which one of the following is a great achievement of the Chipko Movement?
  • a)
    More trees are planted
  • b)
    Development in Himalayan region
  • c)
    Successfully resisted deforestation
  • d)
    Soil erosion gets declined.
Correct answer is option 'C'. Can you explain this answer?

Shreya Mishra answered
Chipko Movement was started in the 1970s to ensure that the forest crops were saved from unnecessary felling. 
One of the major achievements of the movement was that the government of Uttar Pradesh ensured zero tolerance towards commercial forest felling and thousands of trees were saved from being felled which resulted in conserving abundant forest wealth for local benefits.

The form of energy used in respiration is –
  • a)
    Chemical energy
  • b)
    Electrical energy
  • c)
    Mechanical energy
  • d)
    Radiant energy
Correct answer is option 'A'. Can you explain this answer?

Vikas Kumar answered
Cellular respiration is the process of breaking sugar into a form that the cell can use as energy. This happens in all forms of life. Cellular respiration takes in food and uses it to create ATP, a chemical which the cell uses for energy. Usually, this process uses oxygen, and is called aerobic respiration.

What is Jhumming? 
  • a)
    A type of Plant
  • b)
    a type of Agriculture
  • c)
    A type of Animal
  • d)
    a type of Bird
Correct answer is option 'B'. Can you explain this answer?

Arnav Malik answered
Jhumming is a type of agriculture.

Explanation:
Jhumming, also known as shifting cultivation or slash-and-burn agriculture, is a traditional farming practice used in various parts of the world, particularly in the hilly regions of Northeast India, Southeast Asia, and parts of Africa and South America. It is a method of agriculture where the land is cleared by slashing and burning the vegetation, and then crops are cultivated for a few years until the fertility of the soil decreases, after which the land is left fallow and a new plot is cleared and cultivated.

Here is a detailed explanation of jhumming agriculture:

1. Definition and Process:
- Jhumming, derived from the Assamese word "jhum," means "to slash and burn."
- It involves clearing a patch of land by cutting down trees and vegetation.
- The cleared land is then set on fire, which burns the vegetation and releases nutrients into the soil.
- After the fire subsides, the ashes are mixed with the soil, making it fertile for cultivation.
- Crops such as rice, maize, millet, and vegetables are grown on the cleared land.

2. Cycle of Cultivation:
- The cultivation cycle in jhumming typically lasts for 2-3 years.
- The first year is known as the "burnt year," where crops are planted on the newly cleared and fertile land.
- The second year is called the "weedy year," as weeds tend to dominate the field.
- In the third year, known as the "fallow year," the land is left undisturbed to regain its fertility.
- The farmer then moves to a new plot of land, and the cycle repeats.

3. Advantages and Challenges:
- Jhumming has been practiced for centuries and is adapted to the specific ecological conditions of the region.
- It allows farmers to cultivate crops in areas with poor soil fertility and limited access to modern agricultural inputs.
- The fallow period allows the land to regenerate, restoring its fertility and biodiversity.
- However, jhumming is often criticized for its environmental impact, such as deforestation, soil erosion, and loss of biodiversity.

Overall, jhumming is a type of agriculture that involves clearing land through slashing and burning, followed by cultivating crops for a few years before moving to a new plot. It is an age-old farming practice that has both advantages and challenges, making it a topic of discussion and debate in agricultural and environmental circles.

Pink headed duck is a type of:-
  • a)
    Vulnerable species
  • b)
    Rare species
  • c)
    Endemic species
  • d)
    Extinct species
Correct answer is option 'D'. Can you explain this answer?

Harshitha Gupta answered
Pink-headed duck is a type of extinct species.

Introduction

The pink-headed duck (Rhodonessa caryophyllacea) was a species of bird that was once found in parts of Southeast Asia, including India, Bangladesh, and Myanmar. However, the species is now considered extinct.

Reasons for Extinction

There are several reasons that contributed to the extinction of the pink-headed duck:

- Habitat Loss: One major factor was the loss and degradation of its wetland habitats. These wetlands were drained for agricultural purposes or converted into human settlements, resulting in the loss of suitable breeding and foraging grounds for the ducks.

- Hunting and Poaching: The pink-headed duck was also heavily hunted and poached for its attractive plumage and as a trophy. This overexploitation of the species, coupled with the loss of its habitats, significantly reduced its population.

- Competition and Predation: The introduction of non-native species, such as predatory fish and birds, disrupted the ecological balance and put additional pressure on the pink-headed duck population. These new competitors and predators further reduced the chances of survival for the already declining species.

- Fragmentation: The fragmentation of the remaining wetland habitats due to human activities further isolated the pink-headed duck population, making it more vulnerable to extinction. The small, isolated populations were unable to maintain healthy breeding populations, leading to a decline in genetic diversity and eventual extinction.

Conservation Efforts

Despite being extinct, efforts were made to search for any remaining populations of the pink-headed duck. However, extensive surveys conducted in its former range have failed to provide any evidence of its continued existence.

Conclusion

The pink-headed duck was a unique and beautiful species that unfortunately fell victim to various anthropogenic factors. Its extinction serves as a reminder of the importance of conserving natural habitats and protecting vulnerable species to prevent further loss of biodiversity.

Exchange of gases in lung alveoli occurs through –
  • a)
    Active transport
  • b)
    Osmosis
  • c)
    Simple diffusion
  • d)
    Passive transport
Correct answer is option 'C'. Can you explain this answer?

Ashok Pawar answered
Because in alveoli( richly supplied with blood vessels), where oxygenated blood is present, is absorbed by haemoglobin, present in the RBC(Red Blood Cell). With the help of haemoglobin, the oxygenated blood is diffused in the whole body. Where on the other side, deoxygenated blood, which is present in the plasma, is reached to the alveoli and it absorbs by our lungs then finally the deoxygenated blood is exhaled by our nostrils. This is how alveoli helps for respiration with the help of diffusion in our lungs.

Which of the commercially valuable species have damaged the natural forests in south India? 
  • a)
    Chir pine
  • b)
    Teak Monoculture
  • c)
    Himalayan Oak
  • d)
    None of them
Correct answer is option 'B'. Can you explain this answer?

Deepika Ahuja answered
Overgrazing by cattle herds also leads to large-scale destruction of pastures and natural forests. Enrichment plantation is the practice of replacing different species of trees in an area by a single commercially valuable species. Teak plantations have damaged the natural forests in south India, while Chir Pine plantations in Himalayas have greatly reduced the natural oak and rhododendron forests. Factors like environmental pollution and forest fires lead to a depletion of both our flora and fauna. The environmental factors that lead to a decline in biodiversity are caused by inequitable consumption of resources and inequitable responsibility borne for the well-being of the environment.

Narmada Sagar project is in the state of:- 
  • a)
    Madhya Pradesh
  • b)
    Maharashtra
  • c)
    Gujarat
  • d)
    Orissa
Correct answer is option 'A'. Can you explain this answer?

Surbhi Rane answered
The Indira Sagar Dam is a multipurpose project of Madhya Pradesh on the Narmada River at Narmada Nagar, Mundi in the Khandwa district of Madhya Pradesh in India. The foundation stone of the project was laid by late Smt Indira Gandhi, former Prime Minister of India on 23 October 1984. 

Which one of the following is an endangered species of Manipur?
  • a)
    Blue Sheep
  • b)
    Asiatic Buffalo
  • c)
    Sangai (brow anter deer)
  • d)
    Cattle
Correct answer is option 'C'. Can you explain this answer?

Rahul Kapoor answered
The sangai is an endemic and endangered subspecies of brow-antlered deer found only in Manipur, India. It is also the state animal of Manipur. Its common English name is Manipur brow-antlered deer or Eld's deer and the scientific name is Rucervus eldii eldii. Its original natural habitat is the floating marshy grasslands of the Keibul Lamjao National Park, located in the southern parts of the Loktak Lake, which is the largest freshwater lake in eastern India.

Which of the following statements about the breathing cycle is true?
  • a)
    The lungs are completely empty of air after exhalation.
  • b)
    During the breathing cycle, air is taken in and let out, but the lungs always contain a residual volume of air.
  • c)
    Residual volume refers to the air that is only present when the lungs are fully inflated.
  • d)
    The residual volume of air prevents the absorption of oxygen.
Correct answer is option 'B'. Can you explain this answer?

Nk Classes answered
Explanation of the Breathing Cycle:
  • The lungs are never completely empty. After exhalation, a certain amount of air, known as residual volume, remains.
  • This residual volume ensures that the lungs maintain structural integrity and continue to facilitate gas exchange.
  • It is crucial for the lungs to always have some air to prevent collapse and to support the continual exchange of oxygen and carbon dioxide.

“The species that are not found after searches of known or likely areas where they may occur” are known as: 
  • a)
    Normal species
  • b)
    Vulnerable species
  • c)
    Extinct species
  • d)
    Rare species
Correct answer is option 'C'. Can you explain this answer?

Sreemoyee Menon answered
Extinct Species: Furthermore, there are some extinct species. This includes species which are not found after searches of known or likely areas where they may occur. For example, the Asiatic cheetah, pink head duck etc.

In anaerobic respiration –
  • a)
    O2 is given out
  • b)
    CO2 is given out
  • c)
    CO2 is taken in
  • d)
    O2 is taken in
Correct answer is option 'B'. Can you explain this answer?

Esha nayar answered
Understanding Anaerobic Respiration
Anaerobic respiration is a metabolic process that occurs in the absence of oxygen. It allows organisms to generate energy when oxygen is not available. This process is crucial for various organisms, especially in environments where oxygen levels are low.
Key Features of Anaerobic Respiration
- No Oxygen Utilization: Unlike aerobic respiration, anaerobic respiration does not use oxygen. As a result, oxygen is not taken in during this process.
- Production of Carbon Dioxide: One of the primary byproducts of anaerobic respiration is carbon dioxide (CO2). For example, in yeast, the process converts glucose into ethanol and carbon dioxide, which is why CO2 is released.
- Energy Yield: Anaerobic respiration produces less energy compared to aerobic respiration. While aerobic respiration yields about 36 ATP molecules from one glucose molecule, anaerobic respiration typically yields only 2 ATP molecules.
Examples of Anaerobic Respiration
- In Yeast: During fermentation, yeast converts sugars into alcohol and carbon dioxide. This is widely used in baking and brewing industries.
- In Muscle Cells: In humans, during intense exercise, muscle cells may rely on anaerobic respiration when oxygen levels are low, resulting in the production of lactic acid alongside carbon dioxide.
Conclusion
In summary, the correct answer to the question is option 'B' because, during anaerobic respiration, carbon dioxide is produced and released as a byproduct. Understanding this process is essential for appreciating how different organisms adapt to their environments and manage energy production.

Simlipal is located in the state of:-  
  • a)
    Bihar
  • b)
    Jharkhand
  • c)
    Orissa
  • d)
    W. Bengal
Correct answer is option 'C'. Can you explain this answer?

Arshiya Patel answered
Simlipal National Park is a national park and a tiger reserve in the Mayurbhanj district in the Indian state of Odisha.

Himalaya yew is found in:-
  • a)
    Himachal Pradesh and Arunachal Pradesh
  • b)
    Assam
  • c)
    Orissa
  • d)
    None of them
Correct answer is option 'A'. Can you explain this answer?

Amrutha Kapoor answered
The Himalayan Yew is a medicinal plant that is found in Himachal Pradesh and Arunachal Pradesh. From the bark, needles, twigs and roots of this tree, a chemical compound called  is extracted. This chemical is used to make drugs that are used to cure certain types of cancers, but the species is becoming extinct due to over-exploitation.

When did the joint forest management come into existence:- 
  • a)
    1958
  • b)
    1968
  • c)
    1978
  • d)
    1988
Correct answer is option 'D'. Can you explain this answer?

Surbhi Rane answered
The policies and objectives of Joint ForestMovement are detailed in the Indian comprehensive National Forest Policy of 1988 and the Joint Forest Management Guidelines of 1990 of the Government of India.

Which of the following statements is true about the energy released during respiration?
  • a)
    Anaerobic respiration releases more energy than aerobic respiration.
  • b)
    Aerobic respiration releases more energy than anaerobic respiration.
  • c)
    Both aerobic and anaerobic respiration release equal energy.
  • d)
    No energy is released in either process.
Correct answer is option 'B'. Can you explain this answer?

Sandeep naidu answered
Understanding Respiration: Aerobic vs. Anaerobic
Respiration is a vital biological process that cells use to convert food into energy. There are two main types: aerobic respiration and anaerobic respiration.
Aerobic Respiration
- Definition: This process occurs in the presence of oxygen.
- Energy Yield: Aerobic respiration generates a significant amount of energy, producing approximately 36-38 ATP (adenosine triphosphate) molecules per glucose molecule.
- Byproducts: The end products are carbon dioxide and water.
Anaerobic Respiration
- Definition: This occurs in the absence of oxygen.
- Energy Yield: Anaerobic respiration produces much less energy, yielding only about 2 ATP molecules per glucose molecule.
- Byproducts: The byproducts vary: in animals, lactic acid is produced, while in yeast, ethanol and carbon dioxide are generated.
Comparison of Energy Release
- Higher Energy in Aerobic: The key reason option 'B' is correct is that aerobic respiration releases more energy than anaerobic respiration.
- Efficiency: Aerobic respiration is more efficient due to the complete breakdown of glucose, allowing for maximum ATP production.
Conclusion
In summary, the statement that "aerobic respiration releases more energy than anaerobic respiration" is accurate because aerobic processes utilize oxygen to fully oxidize glucose, resulting in a higher energy yield. This fundamental difference is crucial for understanding cellular metabolism and energy production in living organisms.

Which one of the following was launched in 1973? 
  • a)
    Project Tiger
  • b)
    Indian Wildlife Act
  • c)
    Wildlife Act
  • d)
    Indian Wildlife Protection Act
Correct answer is option 'A'. Can you explain this answer?

Arshiya Patel answered
Project Tiger is a tiger conservation programme launched in April 1973 by the Government of India during Prime Minister Indira Gandhi's tenure. The project aims at ensuring a viable population of Bengal tigers in their natural habitats, protecting them from extinction, and preserving areas of biological importance as a natural heritage forever represented as close as possible the diversity of ecosystems across the tiger's distribution in the country. 

Taxol a chemical compound is used to treat the patient of:- 
  • a)
    T.B.
  • b)
    Cancer
  • c)
    Fever
  • d)
    Aids
Correct answer is option 'B'. Can you explain this answer?

Gargi Saha answered
Taxol, an antimitotic agent used to treat cancer, blocks cancer cell growth by stopping cell division, resulting in cell death.

Gangetic Dolphin is a type of:-
  • a)
    Endemic species
  • b)
    Rare species
  • c)
    Vulnerable species
  • d)
    Extinct species
Correct answer is option 'C'. Can you explain this answer?

Arun Yadav answered
A vulnerable species is one which has been categorized by the International Union for Conservation of Nature as likely to become endangered unless the circumstances that are threatening its survival and reproduction improve. Vulnerability is mainly caused by habitat loss or destruction of the species home.

Buxa Tiger Reserve is seriously threatened by the mining of:- 
  • a)
    Coal
  • b)
    Copper
  • c)
    Dolomite
  • d)
    Iron
Correct answer is option 'C'. Can you explain this answer?

Kajal Desai answered
 Mining is another important factor behind deforestation. The Buxa Tiger Reserve in West Bengal is seriously threatened by the ongoing dolomite mining.
Many environmentalists feel that the greatest degrading factors behind the depletion of forest resources are grazing and fuel wood collection.
Large-scale developmental projects have also contributed to the loss of forests. 

The diverse flora and fauna of the planet are under great threat mainly due to: 
  • a)
    Global Warming
  • b)
    Lack of water availability
  • c)
    Insensitivity to our environment
  • d)
    Increasing pollution
Correct answer is option 'C'. Can you explain this answer?

Aashna Desai answered
The correct answer is option 'C': Insensitivity to our environment.

Explanation:
Insensitivity to our environment refers to the lack of awareness and concern for the impact of human activities on the environment. This insensitivity leads to actions that harm the diverse flora and fauna of the planet.

1. Destruction of habitats: Insensitivity to our environment often results in the destruction of natural habitats. Forests are cleared for agriculture, urbanization, and industrialization, leading to the loss of habitat for many plant and animal species. This destruction disrupts ecosystems and threatens the survival of various species.

2. Deforestation: Insensitivity to our environment also contributes to deforestation. Trees are cut down for timber, agriculture, and other purposes, causing the loss of important ecosystems and habitats. Deforestation reduces biodiversity and negatively affects the flora and fauna that rely on forest ecosystems.

3. Overexploitation: Insensitivity to our environment leads to the overexploitation of natural resources. This includes overfishing, illegal hunting, and the unsustainable harvesting of plants. Overexploitation can result in the depletion of certain species and disrupt the delicate balance of ecosystems.

4. Pollution: While pollution is not the correct answer in this case, it is worth mentioning that insensitivity to our environment also contributes to increasing pollution levels. Pollution from various sources, such as industrial waste, agricultural run-off, and improper waste management, can harm both plants and animals. It contaminates water bodies, degrades air quality, and affects the health and survival of species.

5. Climate change: Although global warming is not the correct answer, it is important to note that insensitivity to our environment also contributes to climate change. Activities such as deforestation, burning of fossil fuels, and the release of greenhouse gases are major contributors to climate change. Climate change has significant impacts on ecosystems, altering temperature and precipitation patterns, and affecting the distribution and survival of plant and animal species.

In conclusion, insensitivity to our environment plays a significant role in the threat faced by the diverse flora and fauna of the planet. It leads to the destruction of habitats, deforestation, overexploitation, and ultimately disrupts ecosystems and biodiversity. It is essential for individuals and societies to become more aware and sensitive to the environment to ensure the protection and conservation of our valuable natural resources.

Project Tiger was started in:- 
  • a)
    1953
  • b)
    1963
  • c)
    1973
  • d)
    1983
Correct answer is option 'C'. Can you explain this answer?

Hiral Singh answered
Project Tiger is a tiger conservation programmelaunched in April 1973 by the Government of India during Prime Minister Indira Gandhi's tenure.

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