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Important Questions (2 marks): Natural Vegetation And Wildlife - Class 9 MCQ


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30 Questions MCQ Test Social Studies (SST) Class 9 - Important Questions (2 marks): Natural Vegetation And Wildlife

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Important Questions (2 marks): Natural Vegetation And Wildlife - Question 1

From the point of view of natural vegetation and wildlife, India belongs to which of the following categories?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 1
India's Classification in Terms of Natural Vegetation and Wildlife
India belongs to the category of "One of the twelve mega biodiversity countries of the world." This classification is based on the following factors:
1. Diverse Natural Vegetation:
- India is known for its diverse natural vegetation, ranging from tropical rainforests to alpine meadows.
- It is home to a wide variety of plant species, including over 45,000 species of flowering plants and around 15,000 species of higher plants.
- The country's vegetation types include tropical evergreen forests, deciduous forests, thorn forests, mangroves, alpine meadows, and grasslands.
2. Rich Wildlife:
- India is renowned for its rich wildlife and is home to numerous species of animals and birds.
- It has several national parks, wildlife sanctuaries, and protected areas that provide habitats for various endangered and endemic species.
- The country has a diverse range of wildlife, including tigers, lions, elephants, rhinoceros, leopards, deer, birds, reptiles, and amphibians.
3. High Biodiversity:
- India's diverse natural vegetation and wildlife contribute to its high biodiversity.
- The country is known for its unique and endemic species, which are found only in specific regions.
- India's biodiversity is supported by its varied ecosystems, including forests, wetlands, grasslands, coastal areas, and marine environments.
4. Conservation Efforts:
- India has implemented various conservation measures to protect its natural vegetation and wildlife.
- It has established national parks, wildlife sanctuaries, and biosphere reserves to safeguard endangered species and their habitats.
- The country has also enacted laws and regulations to prevent illegal hunting, deforestation, and habitat destruction.
In conclusion, India is classified as one of the twelve mega biodiversity countries of the world due to its diverse natural vegetation, rich wildlife, high biodiversity, and conservation efforts.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 2

Which of the following positions does India occupy in the world with regard to plant diversity?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 2

C is the correct option.India ranks fourth in Asia and tenth in the world in plant diversity, the Birsa Agricultural University (BAU) Vice Chancellor, N N Singh, has said. "India boasts of 45,000 plants and 91,000 animal species," Singh said delivering a special lecture on Agrobiodiversity and farmers rights at BAU yesterday.

Important Questions (2 marks): Natural Vegetation And Wildlife - Question 3

Which one of the following is not included in the group of non-flowering plants?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 3
Explanation:
The question asks which one of the following is not included in the group of non-flowering plants. To find the correct answer, we need to understand which plants are considered non-flowering.
Non-flowering plants are those that do not produce flowers for reproduction. They reproduce through other means such as spores or by releasing gametes directly into the environment. Examples of non-flowering plants include ferns, algae, and fungi.
Analysis of the options:
A: Ferns
- Ferns are non-flowering plants and reproduce through spores. They are included in the group of non-flowering plants.
B: Orchids
- Orchids are flowering plants and reproduce through flowers. They are not included in the group of non-flowering plants.
C: Algae
- Algae are non-flowering plants and reproduce through various means such as spores or cell division. They are included in the group of non-flowering plants.
D: Fungi
- Fungi are non-flowering plants and reproduce through spores. They are included in the group of non-flowering plants.
Conclusion:
From the analysis of the options, it is clear that the correct answer is B: Orchids. Orchids are flowering plants and are not included in the group of non-flowering plants.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 4

Which of the following types of vegetation does not belong to the category of natural vegetation?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 4
The types of vegetation and their categorization:


When considering the categorization of vegetation, it is important to distinguish between natural vegetation and cultivated vegetation. Natural vegetation refers to the plant species that grow and thrive in a particular area without human intervention, while cultivated vegetation refers to plants that are intentionally grown and maintained by humans for various purposes.
The options provided:


The options provided are forests, mangroves, horticulture, and grasslands. Among these options, the one that does not belong to the category of natural vegetation is horticulture.
Natural vegetation:


- Natural vegetation occurs naturally in a particular region or ecosystem without human involvement.
- It includes plant species that have adapted to the local climate, soil conditions, and other environmental factors.
- Natural vegetation plays a crucial role in maintaining the ecological balance and providing habitat for various animal species.
Cultivated vegetation - Horticulture:


- Horticulture refers to the cultivation of plants for ornamental, medicinal, or culinary purposes.
- It involves the deliberate selection and cultivation of specific plant species.
- Horticultural practices often involve the use of specialized techniques such as grafting, pruning, and fertilization to enhance plant growth and yield.
- Examples of horticultural plants include flowers, fruits, vegetables, and herbs.
- Unlike natural vegetation, horticulture requires human intervention and management.
Conclusion:


Among the options provided, horticulture does not belong to the category of natural vegetation because it involves the intentional cultivation and management of specific plant species for human purposes. The other options, such as forests, mangroves, and grasslands, are considered natural vegetation as they occur naturally in specific ecosystems without human intervention.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 5

Which of the following terms is used for the original plant cover of an area which has grown naturally without human aid and has been left undisturbed by humans for a long time?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 5
The term used for the original plant cover of an area which has grown naturally without human aid and has been left undisturbed by humans for a long time is Natural Vegetation.
- Natural Vegetation: It refers to the plant life that grows naturally in a particular region without any human intervention or cultivation. It includes the native plants and trees that have developed and adapted to the local environmental conditions over time.
- Agriculture: This term refers to the practice of cultivating crops and rearing animals for food, fiber, medicinal plants, and other products. It involves human intervention and the modification of the natural environment for agricultural purposes.
- Gardens: Gardens are man-made areas where plants are intentionally cultivated and maintained by humans for aesthetic or recreational purposes. They are not the original plant cover of an area and are usually designed and landscaped according to human preferences.
- Plantations: Plantations are large-scale agricultural or forestry operations where a single species of plants, such as trees or crops, is grown in a systematic and organized manner for commercial purposes. They are also not the natural vegetation of an area and are typically established and managed by humans.
Therefore, the correct term for the original plant cover of an area that has grown naturally without human aid and has been left undisturbed by humans for a long time is Natural Vegetation.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 6

Which of the following terms is used for a plant community which has grown naturally without human aid and interference?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 6
Plant Community with Natural Growth:
- The term used for a plant community that has grown naturally without human aid and interference is "Virgin vegetation."
Other Options:
- Orchards: Orchards refer to cultivated areas where fruit-bearing trees are planted and managed by humans for agricultural purposes. It involves human intervention in planting, pruning, and harvesting.
- Cultivated fields: Cultivated fields are areas of land that have been prepared and managed by humans for the purpose of growing crops. They involve human activities such as plowing, sowing, and harvesting.
- Plantations: Plantations are large agricultural or forestry estates where crops or trees are cultivated for commercial purposes. They involve human management and intervention, including planting, maintenance, and harvest.
Conclusion:
- Among the given options, the term "Virgin vegetation" best describes a plant community that has grown naturally without human aid and interference.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 7

Which of the following terms is used for plants which are at present part of natural vegetation but have originally come to India from abroad?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 7
Answer:
The correct term for plants that are currently part of natural vegetation in India but originated from abroad is exotic plants. Here is a detailed explanation:
Definition:
Exotic plants refer to plant species that have been introduced to a new region or country from their original native range.
Characteristics of exotic plants:
Exotic plants in India have the following characteristics:
1. Origin: They originate from other countries or regions outside of India.
2. Introduction: They have been brought to India intentionally or unintentionally by humans.
3. Adaptation: Exotic plants have successfully established and integrated into the natural vegetation of India.
4. Presence: They are currently found as part of the natural vegetation in various ecosystems across the country.
Examples:
Some examples of exotic plants in India include:
1. Eucalyptus: Originally native to Australia, eucalyptus trees were introduced to India for their commercial value.
2. Lantana: Lantana is a shrub native to South America but has become invasive in many parts of India.
3. Bougainvillea: This colorful flowering plant was introduced to India from South America for ornamental purposes.
Importance:
Exotic plants can contribute to the biodiversity of a region and provide various ecological benefits. However, they can also become invasive and threaten the native flora and fauna if their population grows unchecked.
In conclusion, the term used for plants that are currently part of India's natural vegetation but originally came from abroad is exotic plants. These plants have been introduced to India from their native ranges and have successfully integrated into the country's ecosystems.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 8

Which of the following terms is used for virgin vegetation which is purely Indian in origin?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 8
Answer:
The correct term used for virgin vegetation that is purely Indian in origin is "Endemic species". Here is a detailed explanation:
Definition:
- Endemic species refer to plants or animals that are native to a particular region and are found nowhere else in the world.
- These species have evolved and adapted to the specific environmental conditions of that region over a long period of time.
Explanation:
- India is known for its rich biodiversity and unique ecosystems.
- It has a wide range of endemic species, which means they are found exclusively within the boundaries of the country.
- These species are the result of India's diverse geographical features, including various types of forests, mountains, rivers, and coastal areas.
- The endemic species of India include plants, animals, and even microorganisms that are found only within the country.
- Some examples of endemic species in India are the Indian peacock, Lion-tailed macaque, Indian rhinoceros, and Neelakurinji flower.
Other Options:
- Endangered species: Refers to species that are at risk of extinction due to various factors such as habitat loss, pollution, climate change, etc.
- Exotic species: Refers to species that are not native to a particular region but have been introduced there either intentionally or accidentally.
- Normal species: This term is not commonly used to describe vegetation. It does not specifically indicate the origin or uniqueness of a species.
In conclusion, the term "Endemic species" is used for virgin vegetation that is purely Indian in origin. These species are unique to India and have evolved over time to adapt to the country's diverse ecosystems.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 9

Which of the following terms is used to denote plants of a particular region or period?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 9
Flora term is used to denote plants of a particular region or period whereas Fauna is used to denote wildlife or animals of a particular region or period.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 10

Which of the following terms is used to denote animal species of a particular region or period?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 10
Answer:
The term used to denote animal species of a particular region or period is "Fauna". Here is a detailed explanation:
Definition:
- Fauna refers to the animal species present in a particular region or during a specific period.
- It includes all the animals, both living and extinct, that inhabit a specific area or existed in a particular geological time period.
Explanation:
- Fauna is derived from the Latin word "Faunus," which refers to the Roman god of forests and wild animals.
- It is the counterpart to the term "Flora" which denotes the plant species of a specific region or period.
- Fauna encompasses a wide range of animal life, including mammals, birds, reptiles, amphibians, fish, and invertebrates.
- Different regions and time periods have distinct faunas due to factors such as climate, geography, and evolution.
- Faunal studies are important for understanding biodiversity, ecological relationships, and evolutionary patterns.
In the given options, the correct term that denotes animal species of a particular region or period is "Fauna." The other options, such as "Fern" and "Flora," are not specifically related to animal species. Therefore, the answer is C: Fauna.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 11

Which of the following factors influence the type and distribution of natural vegetation?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 11
Factors influencing the type and distribution of natural vegetation:
- Landform: The physical features of the land, such as slope, elevation, and aspect, influence the type and distribution of natural vegetation. Different landforms provide different conditions for plant growth, affecting the types of plants that can thrive in a particular area.
- Soil: Soil composition and fertility play a crucial role in determining the type and distribution of natural vegetation. Different types of soil have varying levels of nutrients, pH levels, and water retention capacities, which affect the ability of plants to grow and survive.
- Climate: Climate, including temperature, precipitation, and sunlight, is one of the most significant factors influencing natural vegetation. Different plant species have specific temperature and moisture requirements, and variations in climate can determine the presence or absence of certain types of plants in an area.
- All the above: All of the factors mentioned above interact and influence each other, ultimately shaping the type and distribution of natural vegetation in a particular region. Landform, soil, and climate are interconnected and together determine the suitability of an area for different types of plants.
In conclusion, the type and distribution of natural vegetation are influenced by landform, soil, and climate. These factors interact and determine the conditions for plant growth and survival in a particular region.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 12

Which of the following types of vegetation is common in fertile, level lands?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 12

Fertile land and level lands provide perfect conditions for cultivation of crops.

Important Questions (2 marks): Natural Vegetation And Wildlife - Question 13

Which of the following types of vegetation usually develops on undulating and rough terrains?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 13
Types of Vegetation on Undulating and Rough Terrains:
- Grasslands and Woodlands: Grasslands and woodlands are common types of vegetation that develop on undulating and rough terrains. These areas have a mix of grasses and scattered trees.
- Mangroves: Mangroves, which are salt-tolerant trees and shrubs, typically grow in coastal areas with muddy and undulating terrains. However, they are more commonly found in wetlands and estuaries rather than rough terrains.
- Cactus and Thorny Bushes: Cacti and thorny bushes are adapted to arid and semi-arid regions. They can grow on undulating and rough terrains, as they have evolved to survive in harsh and dry conditions.
- Cultivated Crops: Cultivated crops are unlikely to develop naturally on undulating and rough terrains, as these areas are often unsuitable for agriculture due to the rough and uneven terrain.
Therefore, the correct answer is A: Grasslands and woodlands usually develop on undulating and rough terrains.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 14

Which of the following types of vegetation grows in the sandy soil of the desert?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 14
Types of Vegetation in Sandy Desert Soil:
- Coniferous trees: Coniferous trees are not typically found in sandy desert soil. They are more commonly found in cooler climates with well-drained soil.
- Grasslands: Grasslands are not common in desert environments, especially in sandy soil. Grasses require more water and nutrients than are typically available in desert conditions.
- Cactus and thorny bushes: Cactus and thorny bushes are well-suited to grow in sandy desert soil. They have adapted to the arid conditions and can store water in their tissues to survive in the harsh desert environment.
- Mangroves: Mangroves are salt-tolerant trees that typically grow in coastal areas with brackish water. They are not found in sandy desert soil.
Therefore, the correct answer is C: Cactus and thorny bushes.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 15

Which of the following types of vegetation grows in wet, marshy soil?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 15
Types of Vegetation that Grow in Wet, Marshy Soil:
There are several types of vegetation that are adapted to grow in wet, marshy soil. Among them, the most appropriate answer is B: Mangroves. Here is a detailed explanation of each option:

A: Grasslands:
- Grasslands are not typically found in wet, marshy soil. They are characterized by open spaces covered with grasses and herbaceous plants.
- Grasslands are more commonly found in areas with well-drained soils.

B: Mangroves:
- Mangroves are the correct answer. They are well-suited to grow in wet, marshy soil.
- Mangroves are salt-tolerant trees or shrubs that are found in coastal areas and estuaries.
- They have unique adaptations, such as aerial roots and salt-filtering mechanisms, which allow them to thrive in waterlogged conditions.

C: Cactus:
- Cactus plants are adapted to arid and dry environments.
- They are typically found in desert regions, where the soil is sandy and well-drained.
- Cacti are not suited to grow in wet, marshy soil.

D: Alpine vegetation:
- Alpine vegetation refers to plants that grow at high altitudes, such as in mountainous regions.
- These plants are adapted to cold and harsh environments, rather than wet, marshy conditions.
- Alpine vegetation is typically found in rocky, well-drained soils.
In conclusion, among the given options, B: Mangroves are the type of vegetation that grows in wet, marshy soil. They have specific adaptations that allow them to thrive in waterlogged conditions, making them well-suited for coastal areas and estuaries.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 16

The character and extent of vegetation are mainly determined by which of the climatic factors?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 16
The character and extent of vegetation are mainly determined by:
1. Temperature:
- Temperature affects the growth and distribution of plants.
- Different plants have specific temperature requirements for growth.
- Extreme temperatures can limit the growth of vegetation.
2. Humidity:
- Humidity refers to the amount of moisture in the air.
- Plants require a certain level of humidity for their growth.
- High humidity can promote the growth of certain types of vegetation, while low humidity can limit it.
3. Precipitation:
- Precipitation includes rainfall, snowfall, and other forms of moisture.
- Adequate precipitation is essential for the survival and growth of plants.
- Different plants have different water requirements, and their distribution is influenced by the availability of precipitation.
4. All of the above:
- The character and extent of vegetation are determined by a combination of temperature, humidity, and precipitation.
- These climatic factors interact with each other to create specific conditions for different types of vegetation.
In conclusion, the character and extent of vegetation are mainly determined by temperature, humidity, and precipitation. These climatic factors play a crucial role in shaping the distribution and growth of plants.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 17

Due to which of the following reasons does the vegetation on the slopes of the Himalayas and the hills of the peninsula above the height of 915 metres change from tropical to subtropical, temperate and alpine vegetation?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 17

Different types of soils provide basis for different types of vegetation. On the slopes of the Himalayas and the hills of the Peninsula above the height of 915 metres, the fall in the temperature affects the types of vegetation and it's growth, and changes it from tropical to subtropical temperate and alpine vegetation.

Important Questions (2 marks): Natural Vegetation And Wildlife - Question 18

Which of the following types of vegetation grows in areas with mean annual average temperature of above 24°C?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 18
Explanation:
Vegetation types are generally classified based on the mean annual average temperature of the area in which they grow. In this case, the mean annual average temperature is stated to be above 24°C. Based on this information, we can determine the type of vegetation that grows in such areas.
The correct answer is Tropical. Here's why:
- Tropical vegetation: This type of vegetation is found in regions near the equator and typically experiences high temperatures throughout the year. The mean annual average temperature in tropical regions is usually above 24°C, making it the appropriate choice for this question.
Other options can be ruled out:
- Subtropical vegetation: Subtropical vegetation is found in regions slightly farther away from the equator compared to tropical regions. While subtropical regions can also have high temperatures, the mean annual average temperature may not always be above 24°C.
- Temperate vegetation: Temperate vegetation is found in regions with moderate temperatures, generally between tropical and polar regions. The mean annual average temperature in temperate regions is usually lower than 24°C.
- Alpine vegetation: Alpine vegetation is found in high-altitude regions such as mountains. These areas often have colder temperatures, and the mean annual average temperature is unlikely to be above 24°C.
Therefore, the correct answer is Tropical.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 19

Which of the following types of vegetation zones is found in the higher reaches of the Himalayas with mean annual average temperature below 7°C?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 19

Alpine plants are plants that grow in an alpine climate, which occurs at high elevation and above the tree line. Alpine plants are adapted to the harsh conditions of the alpine environment, which include low temperatures, dryness, ultraviolet radiation, and a short growing season.

Important Questions (2 marks): Natural Vegetation And Wildlife - Question 20

Trees grow faster in which of the following seasons?

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 20

Trees grow faster in summer because the rate of evaporation increases with an increase in temperature owing to which metabolic activities becomes faster in trees. Also the rate of transpiration increases. Trees grow faster in summer because they get ample amount of sunlight to quicken metabolic activities.

Important Questions (2 marks): Natural Vegetation And Wildlife - Question 21

Dachigam national park is in ..............           

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 21
Dachigam National Park is located in Jammu and Kashmir.

  • Jammu and Kashmir is a state in northern India, and Dachigam National Park is situated within its borders.

  • It is located approximately 22 kilometers from the capital city of Srinagar.

  • Dachigam National Park is spread over an area of 141 square kilometers.

  • The park is known for its diverse flora and fauna, including the endangered Kashmir stag or hangul, which is the state animal of Jammu and Kashmir.

  • Other wildlife species found in the park include Himalayan black bear, musk deer, leopard, and various bird species.

  • Dachigam National Park is also home to the Dachigam Wildlife Sanctuary, which was established in 1910 to protect the hangul population.

  • The park is a popular tourist destination and offers opportunities for wildlife viewing, birdwatching, trekking, and picnicking.

  • It is also an important watershed area, as it serves as a source of drinking water for the city of Srinagar.

  • Efforts are being made to conserve the biodiversity of Dachigam National Park and protect its fragile ecosystem.


In conclusion, Dachigam National Park is located in Jammu and Kashmir and is known for its rich biodiversity and scenic beauty.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 22

Name the national bird of India ..........           

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 22
The National Bird of India
The national bird of India is the Peacock. Here are some key points explaining why the peacock holds this prestigious title:
- Symbol of Beauty: The peacock is known for its vibrant and colorful plumage, which symbolizes beauty and grace. It is admired for its stunning appearance and is often associated with elegance.
- Cultural Significance: The peacock has deep cultural and religious significance in India. It is considered a sacred bird in Hindu mythology and is associated with various deities, particularly Lord Krishna and Goddess Saraswati.
- National Emblem: The peacock is depicted in the national emblem of India. The emblem features a lion, a horse, and a peacock, which symbolize power, speed, and beauty, respectively.
- Native to India: The Indian peafowl, a species of peacock, is native to the Indian subcontinent. It is found in various parts of the country, particularly in forests, fields, and near water bodies.
- Conservation Efforts: The peacock is also chosen as the national bird to raise awareness about its conservation. It is listed under the Protected Species in India, and efforts are being made to preserve its habitat and prevent poaching.
The peacock's majestic appearance, cultural significance, and its representation in the national emblem make it a fitting choice for the national bird of India.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 23

Name the national animal of India -           

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 23
The National Animal of India - Tiger
The national animal of India is the tiger. Here are some key points about the national animal:
- Importance: The tiger holds great cultural and ecological significance in India. It is considered a symbol of power, strength, and grace.
- Royal Bengal Tiger: The specific species of tiger associated with India is the Royal Bengal Tiger, also known as the Indian tiger. It is native to the Indian subcontinent.
- Conservation Status: The tiger is an endangered species, and its conservation is of utmost importance. In India, various initiatives and national parks have been established to protect and preserve tigers and their habitats.
- National Parks: Several national parks in India serve as important tiger reserves, including the famous Jim Corbett National Park, Bandhavgarh National Park, and Ranthambore National Park.
- Population: India is home to the largest population of tigers in the world. Efforts are being made to increase their numbers and ensure their survival.
- Threats: Tigers face numerous threats, such as habitat loss, poaching for their body parts, and human-wildlife conflict. Conservation efforts aim to address these challenges.
- Symbol of India's Wildlife: The tiger represents the rich biodiversity and wildlife heritage of India. It is a source of pride and a symbol of the country's commitment to nature conservation.
By protecting and conserving the national animal, India aims to safeguard its natural heritage and promote ecological balance.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 24

.............. type of vegetation is found in the region having more than 200 cm of rainfall.           

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 24
Type of vegetation found in regions with more than 200 cm of rainfall:

  • Evergreen Forest: Evergreen forests are characterized by dense and lush vegetation that remains green throughout the year. They are found in regions with high rainfall and constant moisture. The trees in these forests are tall and have broad leaves to maximize sunlight absorption.

  • Tidal: Tidal vegetation refers to plants that grow in coastal areas, influenced by tides. These areas often experience high levels of rainfall and are prone to flooding. Mangroves and salt marshes are examples of tidal vegetation.

  • Thorn Forest: Thorn forests are found in arid and semi-arid regions with moderate to high rainfall. These forests have trees and shrubs with thorns to conserve water and protect themselves from herbivores. They are well-adapted to dry conditions.

  • Dry deciduous: Dry deciduous forests are found in regions with a distinct wet and dry season. They receive moderate to high rainfall but also experience a dry period. The trees in these forests shed their leaves during the dry season to conserve water.


Therefore, the correct answer is Evergreen Forest. These forests thrive in regions with abundant rainfall, providing the necessary moisture for their dense and green vegetation.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 25

What was the first form of life that existed on the earth ?           

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 25
The First Form of Life on Earth
The first form of life that existed on Earth is believed to be a microscopic organism. Let's explore this in detail:
1. Early Earth Conditions
- The Earth was formed around 4.6 billion years ago.
- The early Earth was a hostile environment with extreme temperatures, volcanic activity, and no oxygen in the atmosphere.
2. Origin of Life
- Life on Earth is believed to have originated around 3.5 to 4 billion years ago.
- The exact process of how life originated is still a topic of scientific research and debate.
3. Microscopic Organism
- The first form of life on Earth is thought to be a single-celled, microscopic organism.
- These organisms were simple, lacking complex structures and organelles found in modern cells.
4. Prokaryotes
- The first life forms were likely prokaryotes, which are organisms without a nucleus or membrane-bound organelles.
- Prokaryotes include bacteria and archaea.
- These organisms were able to survive in extreme environments, such as deep-sea hydrothermal vents.
5. Photosynthesis
- The evolution of photosynthesis by certain prokaryotes was a significant milestone in the history of life.
- Photosynthesis allowed organisms to convert sunlight into energy, producing oxygen as a byproduct.
6. Oxygenation of the Atmosphere
- The release of oxygen into the atmosphere through photosynthesis eventually led to the oxygenation of the Earth's atmosphere.
- This allowed for the evolution of more complex life forms, including plants, animals, and eventually humans.
7. Evolutionary Timeline
- The timeline of early life on Earth is not well-documented, and much of it is based on scientific hypotheses and theories.
- Fossil evidence and genetic studies provide insights into the evolution of life forms over time.
In conclusion, the first form of life on Earth is believed to be a microscopic organism, likely a prokaryote. These simple organisms paved the way for the evolution of more complex life forms, including plants, animals, and eventually humans.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 26

Name an important tree of moist decidous forest -           

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 26
  • Sandalwood is the main species of moist deciduous forests.
  • Tropical Moist Deciduous Forest:
    • Present in the areas having rainfall between 100-200cm.
    • Found in eastern slopes of the Western Ghatsfoothills of the Himalayas in the North-eastern States, and Odisha.
    • Main Species of Tropical Moist Deciduous Forests: Teak, Sal, Sheshum, amla, Kusum, Mahua, Sandalwood, etc.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 27

Sunderban forest get its name from the -           

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 27
Explanation:
The Sunderban forest gets its name from the Sundari trees that are found abundantly in the region. Sunderban means "beautiful forest" in the Bengali language.
Key points:
- The name "Sunderban" is derived from the Bengali words "sundar" meaning beautiful and "ban" meaning forest.
- The Sunderban forest is located in the southern part of West Bengal, India, and extends into Bangladesh.
- It is a unique mangrove forest ecosystem and is home to the Royal Bengal Tiger, making it a popular tourist destination.
- The Sundari tree (Heritiera fomes) is a dominant species in the Sunderban forest and plays a crucial role in maintaining the ecosystem.
- The Sundari tree has a large, spreading crown and is known for its beautiful flowers and timber.
- The timber of the Sundari tree is highly valued and used for various purposes, including construction and boat-making.
- The Sundari tree is adapted to thrive in the saline conditions of the Sunderban region and helps in stabilizing the coastal areas.
- The Sunderban forest is also known for its rich biodiversity, including various species of birds, reptiles, and marine life.
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 28

How many species of birds are known ?           

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 28
Number of Species of Birds Known
There are an estimated 10,000 species of birds in the world. However, it's important to note that the exact number may vary slightly depending on taxonomic revisions and new discoveries. As of now, the number of bird species known to science is approximately 10,000.
Answer: D. 2000
Important Questions (2 marks): Natural Vegetation And Wildlife - Question 29

How many species of plants are there ?           

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 29

With about 47,000 plant species, India occupies tenth place in the world and Fourth in Asia in  plant diversity.

India is one of the 12 mega diversity countries of the world.
there are 47000 plant species in India and occupies tenth place in world and fourth in Asia in plant diversity 15000 flowering plants in India which account 6 percent in this worlds total flowering plants the country has many non flowering plants such as ferns algae and fungi.

Important Questions (2 marks): Natural Vegetation And Wildlife - Question 30

Which natural vegetation is most predominant in India -           

Detailed Solution for Important Questions (2 marks): Natural Vegetation And Wildlife - Question 30
Natural Vegetation in India:
India is known for its rich and diverse natural vegetation. The most predominant natural vegetation in India is the tropical deciduous forest.
Characteristics of Tropical Deciduous Forest:
- Also known as the monsoon forest, it is found in regions with a distinct wet and dry season.
- These forests shed their leaves during the dry season to conserve water.
- They are mostly found in regions with moderate to high rainfall.
- The trees in this type of forest are deciduous, meaning they shed their leaves annually.
- The vegetation consists of a mix of broad-leafed trees, grasses, and shrubs.
Other Types of Vegetation in India:
While tropical deciduous forest is the most predominant, India also has other types of vegetation such as:
- Tropical Rainforest: Found in areas with high rainfall throughout the year, primarily in the northeastern states like Assam and parts of the Western Ghats.
- Tropical Thorn Forest: Found in regions with low rainfall, predominantly in Rajasthan and parts of Gujarat.
- Mangrove Forest: Found along the coastal areas and river deltas, especially in the Sundarbans of West Bengal.
Conclusion:
In conclusion, the most predominant natural vegetation in India is the tropical deciduous forest. However, India is geographically diverse and supports various other types of vegetation as well.
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