All questions of Natural Vegetation and Wildlife for Class 9 Exam

The correct answer is option 'C', which states that there are 50 tiger reserves in India.

Explanation:

**Tiger Reserves in India:**
India is home to a significant population of tigers, and to protect these majestic creatures and their habitats, tiger reserves have been established across the country. Tiger reserves are designated areas where conservation efforts are focused on safeguarding the tiger population and their ecosystems.

**Number of Tiger Reserves in India:**
As of now, India has a total of 50 tiger reserves, spread across various states. These reserves have been established under the Project Tiger initiative, which was launched in 1973 by the Government of India. The objective of this project is to ensure the conservation and sustainable management of the tiger population in the country.

**Purpose of Tiger Reserves:**
Tiger reserves play a crucial role in the conservation of tigers and their habitats. These reserves provide protected areas where tigers can thrive and breed without facing significant threats from poaching, habitat destruction, or human-wildlife conflict. By designating specific areas as tiger reserves, the government aims to create a safe and conducive environment for the survival and growth of the tiger population.

**Project Tiger:**
Project Tiger is a comprehensive wildlife conservation program implemented by the Government of India. It focuses on the protection and management of tiger reserves, research and monitoring, habitat improvement, wildlife law enforcement, and community participation. The project has been instrumental in reviving the tiger population in India, which was once on the brink of extinction.

**Importance of Tiger Reserves:**
Tiger reserves not only safeguard the tiger population but also contribute to the overall biodiversity conservation of the respective regions. These reserves protect the ecosystems that support tigers, which in turn benefit numerous other species of flora and fauna. Additionally, tiger reserves attract tourists, generating revenue and supporting local economies through ecotourism.

In conclusion, India has a total of 50 tiger reserves, which are crucial for the conservation and protection of the tiger population and their habitats. These reserves serve as safe havens for tigers and contribute to the overall biodiversity conservation efforts in the country.

West Bengal..

Tropical deciduous forest

**Answer**

There are approximately 10,000 known species of birds in the world. However, it is important to note that new species are constantly being discovered, and the total number of bird species may change over time.

**Explanation**

*Birds are a diverse group of animals belonging to the class Aves. They are characterized by feathers, beaks, and the ability to fly. Birds can be found in almost every habitat on Earth, from the Arctic tundra to tropical rainforests.*

1. **Estimating the Number of Bird Species**:
- The estimation of the number of bird species on Earth is not an easy task due to several reasons.
- Birds are highly mobile and can migrate across continents, making it difficult to accurately count and classify them.
- Additionally, there are remote and inaccessible regions where bird species may exist but have not yet been discovered or studied.
- Despite these challenges, researchers and ornithologists have been able to identify and describe a significant number of bird species.

2. **Current Number of Known Bird Species**:
- As of now, there are approximately 10,000 known species of birds.
- These species have been identified and described through extensive scientific research and field observations.
- The number of known bird species can vary slightly depending on different taxonomic classifications and revisions.

3. **New Bird Species Discoveries**:
- Discovering new bird species is an ongoing process, and new species are still being identified.
- Scientists and ornithologists regularly conduct fieldwork in various regions, including remote areas, to document and describe new bird species.
- Advancements in technology, such as DNA analysis and molecular techniques, have also facilitated the identification of new bird species.

4. **Importance of Documenting Bird Species**:
- Documenting and understanding the diversity of bird species is crucial for several reasons.
- Birds play vital roles in ecosystems as pollinators, seed dispersers, and predators of pests.
- Studying bird species provides insights into biodiversity, evolution, and ecological dynamics.
- Conservation efforts rely on accurate information about bird species to protect and manage their habitats effectively.

In conclusion, while the exact number of bird species on Earth may not be known with absolute certainty, the current estimate stands at approximately 10,000 known species. Ongoing research and discoveries will likely continue to add to this number in the future.

It's true

Correct answer is B Rann of kutch

Dachigam National Park is located 22 kilometers from Srinagar, Jammu and Kashmir. It covers an area of 500 km2. The name of the park literally stands for "ten villages" which could be in memory of the ten villages that were relocated for its formation.

The Himalayas,option 'B'.

Option A is correct

The correct answer is option 'C', Fauna.

Fauna refers to the animal species of a particular region or period. It is derived from the Latin word "Fauna" which means the goddess of animals. The term is used to describe the collective animal life of a specific geographical region or a particular time period.

Explanation:

1. Definition of Fauna:
- Fauna refers to the animals that inhabit a particular region or period.
- It includes all the animal species, both vertebrates (such as mammals, birds, reptiles, amphibians, and fish) and invertebrates (such as insects, spiders, crustaceans, mollusks, and worms).
- Fauna is a term used in the field of biology and ecology to study and describe the animal life in different ecosystems.

2. Difference between Flora and Fauna:
- Flora refers to the plant species of a particular region or period, while fauna refers to the animal species.
- Flora and fauna are collectively used to describe the biodiversity of an area.

3. Importance of Fauna in Ecology:
- Fauna plays a crucial role in maintaining the ecological balance of an ecosystem.
- Each species in a fauna has its own ecological niche and contributes to the overall functioning of the ecosystem.
- The presence or absence of certain animal species can have a cascading effect on the entire food web and ecosystem dynamics.

4. Fauna of a Specific Region or Period:
- The fauna of a specific region is determined by various factors such as climate, geography, and habitat availability.
- Different regions have their own unique fauna, characterized by the presence of certain species and the absence of others.
- Similarly, the fauna of a particular period in Earth's history can be studied through the fossil record, providing insights into the past biodiversity and evolution of animals.

In conclusion, the term "fauna" is specifically used to denote the animal species of a particular region or period. It is an essential concept in biology and ecology, helping us understand the diversity and dynamics of animal life in different ecosystems.

Nilgiri is a bio reserve of India.
it's not need explain

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.

Dense Forests in Southern Himalayas

The Himalayas are the highest mountain range in the world, spanning over 2,400 km through five countries: India, Nepal, Bhutan, China, and Pakistan. The Himalayan mountain range is home to a diverse range of flora and fauna. The southern part of the Himalayas, which includes the states of Uttarakhand, Sikkim, West Bengal, and Arunachal Pradesh, is covered with dense forests.

The dense forests in the southern Himalayas are home to a wide variety of flora and fauna, including several endangered species. These forests provide habitat for several large mammals, such as elephants, tigers, leopards, and bears, and are also home to numerous bird species.

The southern Himalayas are divided into two parts: the Eastern Himalayas and the Western Himalayas. The Eastern Himalayas are spread across the states of Sikkim, Arunachal Pradesh, and parts of Assam, while the Western Himalayas are spread across the states of Uttarakhand and Himachal Pradesh.

The dense forests in the southern Himalayas are spread across both the Eastern and Western Himalayas. The forests in the Eastern Himalayas are primarily tropical and subtropical forests, while the forests in the Western Himalayas are mainly temperate forests.

Some of the major forests in the southern Himalayas include:

1. Sundarbans: The Sundarbans is a mangrove forest located in the delta of the Ganges, Brahmaputra, and Meghna rivers in India and Bangladesh. It is home to the Bengal tiger, saltwater crocodile, and several other species of flora and fauna.

2. Buxa Tiger Reserve: The Buxa Tiger Reserve is located in the state of West Bengal and is home to the Bengal tiger, Indian leopard, and several other species of mammals and birds.

3. Namdapha National Park: The Namdapha National Park is located in the state of Arunachal Pradesh and is home to several endangered species, including the clouded leopard, snow leopard, and Hoolock gibbon.

4. Nanda Devi National Park: The Nanda Devi National Park is located in the state of Uttarakhand and is home to the Himalayan black bear, snow leopard, and several species of birds.

In conclusion, the southern Himalayas are covered with dense forests that are home to a diverse range of flora and fauna. These forests are spread across both the Eastern and Western Himalayas and are home to several endangered species.

**Coniferous trees** are a type of trees that have cones, needle-like leaves, and are typically evergreen. They are well adapted to cold climates, where they can withstand extreme temperatures and harsh conditions. These trees are commonly found in high-altitude regions, such as mountains and higher latitudes.

**Altitude ranges for coniferous trees**:
The correct answer to the given question is option 'A', which states that coniferous trees are found at an altitude of 1500 m - 3000 m. Let's understand why this is the correct answer:

1. **Altitude and climate**: Coniferous trees prefer colder climates, and as altitude increases, the temperature usually decreases. The higher the altitude, the colder the climate becomes. Coniferous trees are adapted to survive in low temperatures and can tolerate freezing conditions. Therefore, they are commonly found at higher altitudes where the climate is colder.

2. **Tree line**: The tree line is the elevation limit above which trees cannot grow due to harsh environmental conditions. As altitude increases, the tree line descends. The tree line is influenced by factors such as temperature, wind, and snow cover. Coniferous trees are often found near or above the tree line, as they are able to withstand the harsh conditions present at higher altitudes.

3. **Adaptations**: Coniferous trees have several adaptations that enable them to thrive in high-altitude environments. For example, their needle-like leaves help to reduce water loss and prevent snow accumulation. Their cone-shaped structure helps to shed snow and distribute weight evenly. These adaptations allow coniferous trees to survive in the cold and snowy conditions found at higher altitudes.

4. **Examples**: Some examples of coniferous trees commonly found at high altitudes include pine, spruce, fir, and cedar trees. These trees are often seen in mountainous regions, such as the Himalayas, the Rocky Mountains, and the Alps.

In conclusion, coniferous trees are found at altitudes ranging from 1500 m to 3000 m. These trees are well adapted to withstand the cold and harsh conditions present at higher altitudes, and their presence is often seen near or above the tree line.

Tropical rainforests Or tropical evergreen forests are found in areas of heavy rainfall hence, The trees found in these forests are rosewood, ebony and mahogany et cetera

Vegetation Zone for Silver Fur

The correct answer is option 'C', i.e., Montane forests.

Montane forests are located in mountainous regions, usually at higher altitudes. They are characterized by cool temperatures, high rainfall, and diverse species of plants and animals. The vegetation in these forests is typically dense and includes a mix of evergreen and deciduous trees.

Silver fur is a type of small mammal that is found in montane forests. These animals have a silver-gray colored fur, which helps them blend in with their surroundings and avoid detection from predators. They are primarily found in South America, particularly in the Andes mountain range.

Reasons for Silver Fur’s Habitat in Montane Forests

There are several reasons why silver fur is found in montane forests:

1. Habitat: Montane forests provide an ideal habitat for silver fur. The dense vegetation provides cover and protection from predators, while the cool temperatures and high rainfall create a suitable environment for these animals to thrive.

2. Food: Silver fur primarily feeds on insects and other small invertebrates. Montane forests are home to a wide range of these creatures, providing a plentiful food source for silver fur.

3. Altitude: Silver fur is adapted to living at higher altitudes. Montane forests are found at elevations ranging from 1,000 to 3,500 meters, which is within the preferred range for silver fur.

Conclusion

In conclusion, silver fur is found in montane forests due to the habitat, food sources, and altitude that these forests provide. These animals are adapted to living in mountainous regions and have developed physical characteristics like silver-gray fur to help them survive in their environment.

Tropical Deciduous Forests in India

Tropical deciduous forests, also known as monsoon forests, are found in areas with a tropical wet and dry climate. These forests are characterized by trees that shed their leaves during the dry season to conserve water. In India, tropical deciduous forests are found in several states, including Jharkhand, Western Orissa, and Chhattisgarh.

Explanation:

The correct answer to the question is option D - Rajasthan. Rajasthan does not have tropical deciduous forests. The state of Rajasthan is primarily dominated by the Thar Desert, which receives very little rainfall throughout the year. The arid climate and lack of rainfall make it unsuitable for the growth of tropical deciduous forests.

In contrast, Jharkhand, Western Orissa, and Chhattisgarh receive a significant amount of rainfall during the monsoon season, which supports the growth of tropical deciduous forests. These forests are an important part of the ecosystem and support a wide range of flora and fauna.

Conclusion:

In conclusion, tropical deciduous forests are an important part of the ecosystem in India. While these forests are found in several states, including Jharkhand, Western Orissa, and Chhattisgarh, they are not found in Rajasthan due to its arid climate and lack of rainfall. It is important to protect these forests to maintain the ecological balance and support biodiversity.

They are found in the hot wet forests of Assam, Karnataka and Kerala. These areas have huge forest, which are very suitable for elephants.

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.

The correct answer is option 'B' - Endemic species.

Explanation:

Endemic species refer to plants or animals that are exclusively found in a particular geographic area and nowhere else in the world. These species have evolved and adapted to specific environmental conditions in that particular region over time, resulting in their unique characteristics.

In the context of India, there are several endemic species that are found only within the boundaries of the country. These species have a significant ecological and conservation value as they represent the rich biodiversity and unique ecosystems of India.

Here are some key points to understand endemic species and its significance in India:

1. Definition of Endemic Species:
- Endemic species are those that have a restricted distribution and are confined to a specific region or habitat.
- They are not found naturally anywhere else in the world.
- These species are often vulnerable to habitat loss, degradation, and other threats.

2. Endemic Species in India:
- India, being a vast and diverse country, is home to a wide range of endemic species.
- These species are found in various habitats such as forests, grasslands, wetlands, and mountains.
- Examples of endemic species in India include the Nilgiri Tahr, Malabar Hornbill, Andaman Wild Pig, and the Nicobar Megapode, among others.

3. Significance of Endemic Species:
- Endemic species play a crucial role in maintaining the balance of ecosystems.
- They contribute to the biodiversity and ecological stability of a region.
- Endemic species are often indicators of the health of their respective ecosystems.
- They also have cultural and aesthetic values, being unique to a specific region.

4. Conservation of Endemic Species:
- Due to their limited distribution, endemic species are particularly vulnerable to threats such as habitat loss, climate change, poaching, and invasive species.
- Conservation efforts are essential to protect and preserve these species.
- Measures such as protected areas, wildlife sanctuaries, and conservation programs are implemented to safeguard the habitats of endemic species.
- Conservation efforts also involve raising awareness, conducting research, and promoting sustainable practices.

In conclusion, endemic species are virgin vegetation that is purely Indian in origin. They are exclusive to a particular region and represent the unique biodiversity of India. Conservation efforts are crucial to protect these species and their habitats for the benefit of both ecological balance and future generations.

The National Animal of India is the Tiger

The national animal of India is the tiger, which is known for its majestic appearance and powerful presence. Here is an explanation of why the tiger was chosen as the national animal:

Rich cultural and historical significance:
- Tigers have been an integral part of Indian culture and history for centuries. They are often depicted in Indian mythology, folklore, and literature, symbolizing strength, power, and royalty.
- The tiger is associated with various Hindu deities, such as Goddess Durga and Lord Shiva, further enhancing its cultural significance.

Ecological importance:
- Tigers play a crucial role in maintaining the ecological balance of India's diverse ecosystems. They are apex predators and help control the population of herbivores, which in turn prevents overgrazing and maintains the health of forests.
- By conserving tigers and their habitats, India is also protecting numerous other plant and animal species that depend on these habitats.

Conservation efforts:
- India has been actively involved in tiger conservation for several decades. The establishment of Project Tiger in 1973 was a significant step towards protecting and increasing tiger populations in the country.
- Various national parks and wildlife sanctuaries have been designated as tiger reserves, providing protected areas for these majestic animals.
- The tiger is considered an umbrella species, meaning that its conservation indirectly benefits other species sharing its habitat. Therefore, by focusing on tiger conservation, India is working towards preserving entire ecosystems.

Symbol of national pride:
- The tiger represents the rich biodiversity and wildlife heritage of India. It symbolizes the country's commitment to conservation and showcases its natural beauty to the world.
- The national animal serves as a powerful emblem, evoking a sense of national pride and unity among the Indian population.

Conclusion:
The tiger was chosen as the national animal of India due to its cultural significance, ecological importance, conservation efforts, and representation of national pride. It embodies the country's commitment to wildlife conservation and serves as a reminder of India's rich biodiversity.

Option A..

The correct answer is option 'C', Horticulture.

Horticulture is the science and art of cultivating fruits, vegetables, flowers, and ornamental plants. It involves the intentional and controlled cultivation of plants for human use, whether it be for food, medicine, or aesthetics. Horticulture is a human-made activity and does not fall under the category of natural vegetation.

Let's break down the different types of vegetation mentioned in the question and understand why horticulture does not belong to the category of natural vegetation:

1. Forests:
Forests are large areas dominated by trees and various forms of vegetation. They occur naturally and are characterized by their dense canopy cover, diverse plant and animal species, and complex ecological interactions. Forests play a crucial role in maintaining the balance of the ecosystem, providing habitat for wildlife, regulating climate, and supplying resources such as timber and medicinal plants.

2. Mangroves:
Mangroves are a type of vegetation found in coastal areas, where land and sea meet. They consist of salt-tolerant trees and shrubs that grow in intertidal zones, where they are subjected to regular tidal inundation. Mangroves are important ecosystems that provide habitat for a diverse range of species, protect coastlines from erosion and storm damage, and act as nurseries for various marine organisms.

3. Horticulture:
Horticulture, as mentioned earlier, is the cultivation of plants for human use. It involves the deliberate selection, breeding, and management of plants to enhance their growth, health, and productivity. Horticultural practices can include growing fruits, vegetables, flowers, herbs, and ornamental plants in gardens, nurseries, and greenhouses. Horticulture is a human intervention and often involves the use of advanced techniques such as grafting, hybridization, and controlled environments to optimize plant growth and produce desirable traits.

4. Grasslands:
Grasslands are ecosystems dominated by grasses and herbaceous plants. They occur in both tropical and temperate regions and can be found in various forms such as savannas, prairies, steppes, and meadows. Grasslands support a rich diversity of plant and animal species and play essential ecological roles such as carbon storage, soil stabilization, and water filtration.

In conclusion, while forests, mangroves, and grasslands are natural vegetation types that occur without human intervention, horticulture is a human-made activity focused on cultivating plants for human use. Therefore, horticulture does not belong to the category of natural vegetation.

D is correct option due to

50,000 species

There are estimated to be over 18,000 species of flowering plants in India, which constitute some 6-7 percent of the total plant species in the world. India is home to more than 50,000 species of plants, including a variety of endemics.

B

**Wildlife Protection Act in India**

The Wildlife Protection Act, 1972 is a significant legislation enacted by the Government of India for the protection and conservation of wildlife in the country. It was implemented on 9th September 1972, replacing the earlier Wildlife Protection Act of 1952.

**Background**

Prior to the enactment of the Wildlife Protection Act in 1972, the protection and conservation of wildlife in India were governed by the Wildlife (Protection) Act of 1952. However, this earlier legislation was found to be inadequate in addressing the emerging challenges and concerns related to wildlife conservation. It did not provide adequate provisions for the protection and management of wildlife habitats and biodiversity.

**Key Provisions**

The Wildlife Protection Act, 1972 introduced several important provisions and measures to safeguard the wildlife of India. Some of the key provisions include:

1. **Protected Areas**: The Act provides for the establishment of protected areas such as national parks, wildlife sanctuaries, and conservation reserves. These areas are designated to provide a safe habitat for different species of wildlife.

2. **Regulation of Hunting**: The Act prohibits hunting of specified animals, both terrestrial and aquatic, except under certain circumstances permitted by the law. It aims to prevent the depletion of wildlife populations due to excessive hunting.

3. **Control of Trade**: The Act regulates the trade and commerce of wildlife and their derivatives. It prohibits the trade of certain endangered species and their products, thereby discouraging illegal wildlife trafficking.

4. **Conservation Initiatives**: The Act promotes the conservation of wildlife through various measures such as habitat restoration, reintroduction of endangered species, and captive breeding programs.

5. **Punitive Measures**: The Act includes strict penalties and punishments for offenses related to wildlife conservation. It aims to deter illegal activities such as poaching, smuggling, and destruction of habitats.

**Impact and Significance**

The Wildlife Protection Act, 1972 has played a crucial role in the conservation and protection of wildlife in India. It has helped in the recovery of several endangered species and the restoration of their habitats. The establishment of protected areas has provided safe havens for wildlife, allowing them to thrive and reproduce. The Act has also contributed to the promotion of wildlife tourism, raising awareness about the importance of conservation among the public.

In conclusion, the Wildlife Protection Act of 1972 was implemented in India to address the shortcomings of the earlier legislation and provide comprehensive measures for the protection and conservation of wildlife. With its various provisions and initiatives, the Act has been instrumental in safeguarding the rich biodiversity of the country and ensuring the sustainable management of wildlife resources.

India belongs to the category of "One of the twelve mega biodiversity countries of the world." This classification is based on the rich and diverse natural vegetation and wildlife found in the country. Let's understand why India falls into this category in detail:

**1. Biodiversity Hotspots:**
India is home to several biodiversity hotspots, which are regions with high levels of species richness and endemism. Two such hotspots in India are the Western Ghats and the Eastern Himalayas. These regions support a wide range of flora and fauna, including numerous endemic and threatened species.

**2. Species Richness:**
India's diverse climate, varied topography, and rich ecosystems contribute to its high species richness. The country is home to approximately 7-8% of the world's recorded species, including over 91,000 animal species and more than 45,000 plant species. This includes a wide range of mammals, birds, reptiles, amphibians, fishes, and insects.

**3. Endemism:**
India has a significant number of endemic species, which means they are found exclusively within the country's borders. For example, the Indian subcontinent has its own unique set of large mammals, such as the Bengal tiger, Indian rhinoceros, and Asiatic lion. Additionally, several plant species, like the Neelakurinji flower in the Western Ghats, are found only in specific regions of India.

**4. Protected Areas:**
India has established a network of protected areas to conserve its rich biodiversity. These include national parks, wildlife sanctuaries, and biosphere reserves. The country currently has over 100 national parks and more than 500 wildlife sanctuaries, which provide habitat protection and conservation measures for various species.

**5. Conservation Efforts:**
India has made significant efforts to conserve its biodiversity through various initiatives and policies. The Wildlife Protection Act of 1972 provides legal protection to wildlife and their habitats, and the Forest Conservation Act of 1980 regulates the diversion of forest land for non-forest purposes. The government has also launched programs like Project Tiger and Project Elephant to protect these iconic species.

**Conclusion:**
Considering the significant species richness, endemism, presence of biodiversity hotspots, extensive protected area network, and conservation efforts, India is rightly classified as one of the twelve mega biodiversity countries of the world. The country's natural vegetation and wildlife contribute to its ecological significance and make it a global hotspot for biodiversity conservation.

- Exotic species are also called as alien species. These are the animals that are usually not present in the area but are reached to the area by human activity or immigration.
- Starlings were brought over from Europe to North America. This is an example of exotic species in North America. These may harm or benefit the environment.

India's Position in Mega Biodiversity
India is recognized as one of the 17 mega-biodiversity countries in the world. This status is significant due to the country’s vast array of flora and fauna, making it an essential player in global biodiversity conservation.
Understanding Mega Biodiversity Countries
- Mega-biodiversity countries are defined as nations that harbor the majority of Earth's species and are home to a significant percentage of the world’s biodiversity.
- These countries collectively contain more than 60% of the world's biodiversity, which is crucial for ecological stability and sustainability.
India’s Rich Biodiversity
- India is home to approximately 7-8% of the world’s recorded species, including over 45,000 plant species and more than 91,000 animal species.
- The country's diverse ecosystems range from the Himalayas to the Western Ghats and coastal regions, contributing to varied habitats and species richness.
Importance of Biodiversity
- Biodiversity is vital for ecosystem services, including food production, clean water, and climate regulation.
- It plays a crucial role in human health, culture, and economic development.
Conservation Efforts
- India has implemented several conservation programs and protected areas, including national parks and wildlife sanctuaries, to safeguard its rich biodiversity.
- Initiatives such as the National Biodiversity Action Plan aim to enhance conservation efforts and sustainable use of biological resources.
In conclusion, India's classification as one of the 17 mega-biodiversity countries underscores its ecological importance and the need for ongoing conservation efforts to protect its unique biological heritage.

Tropical rainforests are found in regions that experience high amounts of rainfall throughout the year. The rainforests are characterized by high levels of biodiversity, with a variety of animal and plant species coexisting in a complex ecosystem. In this context, the amount of rainfall plays a crucial role in determining the growth and survival of rainforest ecosystems.

Factors affecting the growth of tropical rainforests

1. Rainfall: Tropical rainforests require a minimum of 200 cm of rainfall annually to support their growth. The rainfall is distributed throughout the year, with no distinct dry season.

2. Temperature: Tropical rainforests experience high temperatures throughout the year, with an average temperature of 25°C. The warm temperatures are ideal for the growth of plants and animals.

3. Sunlight: The rainforest canopy blocks most of the sunlight from reaching the forest floor. However, the canopy allows enough sunlight to penetrate to support the growth of plants and animals.

4. Soil: The soil in tropical rainforests is nutrient-poor, but the rapid decomposition of organic matter provides a constant supply of nutrients.

Why do tropical rainforests need high amounts of rainfall?

Rainfall is essential for the growth of tropical rainforests because:

1. It provides water for plants: Rainwater provides plants with the water they need to survive and grow.

2. It regulates temperature: Rainfall helps to regulate the temperature in the rainforest by cooling the atmosphere.

3. It supports the water cycle: Rainfall is an essential part of the water cycle, which is critical for the survival of plants and animals in the rainforest.

Conclusion

In conclusion, tropical rainforests require a minimum of 200 cm of rainfall annually to support their growth. The rainfall is distributed throughout the year, with no distinct dry season. The proper balance of rainfall, temperature, sunlight, and soil nutrients is critical for the survival of rainforest ecosystems.

**Mangroves** are the forests that are affected by tides in coastal areas. These unique ecosystems are found in the intertidal zones of tropical and subtropical coastlines, where they serve as a transition zone between land and sea. They are characterized by the presence of specialized tree species known as mangroves, which have adapted to living in saline, oxygen-depleted soil and are capable of withstanding the daily ebb and flow of tides.

**Importance of Mangroves:**

Mangroves play a vital role in maintaining the health and stability of coastal ecosystems. They provide numerous ecological benefits, including:

1. **Protection against coastal erosion**: The intricate root systems of mangroves act as a natural buffer, trapping sediments and reducing the impact of waves and currents. This helps to prevent erosion and maintain the stability of the coastline.

2. **Habitat for diverse species**: Mangrove forests provide a unique habitat for a wide range of plant and animal species, many of which are specially adapted to the challenging conditions of the coastal environment. They serve as nurseries for juvenile fish, crabs, and other marine organisms, contributing to the overall biodiversity of the area.

3. **Carbon sequestration**: Mangroves are highly efficient at capturing and storing carbon dioxide from the atmosphere, making them important players in the fight against climate change. They have the ability to sequester carbon at a rate up to five times higher than other types of forests.

4. **Water filtration**: The dense root systems of mangroves act as natural filters, trapping sediments and pollutants from the water. This helps to improve water quality and maintain the health of nearby coral reefs, seagrass beds, and other marine ecosystems.

5. **Protection against storms**: Mangroves can absorb and dissipate the energy of storm surges and cyclones, providing a natural defense against the destructive impacts of extreme weather events. This can help to protect coastal communities and infrastructure from damage.

6. **Socio-economic benefits**: Mangrove forests also provide numerous socio-economic benefits to local communities. They support traditional livelihoods such as fishing and forestry, provide a source of sustainable timber and non-timber forest products, and contribute to eco-tourism and recreational activities.

**Conclusion:**

Mangroves are unique forests that thrive in coastal areas and are directly influenced by tides. They provide a wide range of ecological, economic, and social benefits, making them invaluable ecosystems that need to be conserved and protected. The preservation of mangroves is crucial for maintaining the health and resilience of coastal environments and the well-being of both human and natural communities.

The Nilgiri biosphere reserve helps in the protection of wildlife in that particular area from the practices like predation, competition, etc. It is an international biosphere reserve. It is located in the Western Ghats and Nilgiri Hills ranges of South India. It was declared as the world's natural heritage. Nilgiri biosphere reserve was constituted by UNESCO in September 1986 under Man and Biosphere Programme. It has a diverse range of flora and fauna which is a great source of biodiversity.

In case of the gymnosperm there is presence of seed but the seed is not enclosed within the fruits and as a result of this there is no flower which is present in the gymnosperms. other types of plants such as algae and ferns also belong to the non-flowering plants.

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.

Option C is correct

Rubber belongs to the Tropical Evergreen vegetation type.

Tropical Evergreen Vegetation:

Tropical evergreen forests are dense forests found in areas with high rainfall and temperatures. These forests are also known as rainforests and are found in tropical regions like South America, Central Africa, and Southeast Asia. The vegetation in these forests is characterized by tall trees, dense undergrowth, and a wide variety of plant species.

Rubber in Tropical Evergreen Vegetation:

Rubber trees (Hevea brasiliensis) are native to the Amazon rainforest in South America but are now widely grown in tropical regions around the world. The trees thrive in the warm, humid conditions of tropical evergreen forests, where they can grow up to 100 feet tall.

The rubber tree is a major source of natural rubber, which is used in the manufacture of a wide range of products, including tires, gloves, and medical equipment. The sap of the rubber tree is collected by tapping the tree, which involves making a small incision in the bark and collecting the latex that flows out.

In conclusion, Rubber belongs to the Tropical Evergreen vegetation type because it thrives in the warm, humid conditions of tropical evergreen forests.