NCERT Solutions for Class 6 Geography Chapter 8: India Climate, Vegetation & Wildlife

The chapter "India: Climate, Vegetation and Wildlife" from the Class 6 Geography textbook explores the diverse climatic conditions, varied vegetation types, and rich wildlife of India. This comprehensive NCERT solution helps students understand the relationship between climate, vegetation, and wildlife in India.

India's Climate

Factors Affecting India's Climate

• Latitude: The Tropic of Cancer divides India into two halves - the tropical region in the south and the subtropical region in the north.
• Altitude: The Himalayan mountains act as a barrier, protecting India from cold winds from Central Asia.
• Distance from the Sea: Coastal areas experience moderate climate while interior regions have extreme temperatures.
• Wind Systems: Monsoon winds bring most of the rainfall in India.
• Relief Features: Mountains and plateaus influence rainfall distribution and temperature.

Seasons in India

1. Winter Season (December to February): Cold dry season with temperatures decreasing from south to north.
2. Summer Season (March to May): Hot weather with temperatures reaching 48C in some parts of northwest India.
3. South-West Monsoon Season (June to September): Rainy season bringing about 75-90% of annual rainfall.
4. Season of Retreating Monsoon (October to November): Northeast monsoon with cyclonic depressions along the eastern coast.

India's Vegetation

Types of Natural Vegetation

1. Tropical Evergreen Forests:
   • Found in areas with heavy rainfall (over 200 cm)
   • Trees remain green throughout the year
   • Common trees: ebony, mahogany, rosewood, rubber
   • Locations: Western Ghats, Lakshadweep, Andaman and Nicobar Islands
2. Tropical Deciduous Forests:
   • Most widespread vegetation type in India
   • Trees shed leaves during the dry season
   • Common trees: teak, sal, sandalwood, sheesham
   • Locations: Regions with 100-200 cm rainfall
3. Tropical Thorn Forests and Scrubs:
   • Found in areas with less than 70 cm rainfall
   • Vegetation consists of thorny trees and bushes
   • Common plants: babool, kikar, khair, cactus
   • Locations: Rajasthan, Gujarat, Punjab, Haryana
4. Montane Forests:
   • Found in mountainous regions
   • Vegetation changes with altitude
   • At higher altitudes: coniferous trees like pine, deodar, spruce
   • At very high altitudes: alpine grassland and mosses
5. Mangrove Forests:
   • Found in coastal areas affected by tides
   • Trees can survive in saline water
   • Common trees: sundari, palm, coconut
   • Locations: Sunderbans in West Bengal and Bengal coast

India's Wildlife

Diversity of Wildlife in India

• Mammals: Bengal Tiger, Indian Elephant, One-horned Rhinoceros, Asiatic Lion, Leopard, Snow Leopard
• Birds: Peacock (National Bird), Parrots, Owls, Eagles, Falcons, Pheasants
• Reptiles: Crocodiles, Snakes (King Cobra, Python), Turtles
• Aquatic Species: Various fish species, dolphins, river sharks
• Insects: Butterflies, bees, beetles, ants

Conservation Measures

India has taken several initiatives to protect its wildlife:

• Establishment of National Parks and Wildlife Sanctuaries
• Implementation of Project Tiger and Project Elephant
• Ban on hunting of protected species
• Creation of Biosphere Reserves
• Zoos and botanical gardens for conservation

NCERT Solutions

1. Which winds bring rainfall to India? Why is it so important?
   The southwest monsoon winds bring rainfall to India. These winds are important because they provide about 75-90% of India's annual rainfall. This rainfall is crucial for agriculture, which supports a large portion of India's population. The monsoon winds also help in replenishing water reservoirs, groundwater, and rivers.
2. Name the different seasons in India.
   The four major seasons in India are:

   • Winter Season (December to February)
   • Summer Season (March to May)
   • South-West Monsoon Season (June to September)
   • Season of Retreating Monsoon (October to November)
3. What is natural vegetation?
   Natural vegetation refers to the plant life that grows naturally in a particular region without human interference. It is also called virgin vegetation. The plants in natural vegetation have adapted to the climatic conditions of the area over a long period. Examples include forests, grasslands, and shrubs that grow naturally without being planted or maintained by humans.
4. Name the different types of vegetation found in India.
   The different types of vegetation found in India are:

   • Tropical Evergreen Forests
   • Tropical Deciduous Forests
   • Tropical Thorn Forests and Scrubs
   • Montane Forests
   • Mangrove Forests
5. What is the difference between Evergreen and Deciduous forests?
   • Evergreen Forests: These forests remain green throughout the year as the trees do not shed their leaves simultaneously. They are found in areas with heavy rainfall (over 200 cm).
   • Deciduous Forests: These forests have trees that shed their leaves during the dry season to conserve water. They are found in areas with moderate rainfall (100-200 cm) and experience distinct wet and dry seasons.
6. Why is tropical rainforest also called evergreen forest?
   Tropical rainforests are also called evergreen forests because the trees in these forests do not shed their leaves simultaneously. They remain green throughout the year. This adaptation is possible because the region receives heavy rainfall throughout the year, ensuring that the trees do not face water scarcity and can maintain their foliage year-round.

1. Which of these is NOT a type of natural vegetation?
   (a) Forests, (b) Grasslands, (c) Crops, (d) Shrubs
   Correct Answer: (c) Crops (Crops are not natural vegetation as they are cultivated by humans)
2. Which region receives the highest rainfall in India?
   (a) Western Coast, (b) Northeastern India, (c) Punjab, (d) Rajasthan
   Correct Answer: (b) Northeastern India (Mawsynram in Meghalaya receives the highest rainfall in the world)
3. Which trees are commonly found in tropical deciduous forests?
   (a) Pine, (b) Teak, (c) Babool, (d) Sundari
   Correct Answer: (b) Teak (Teak is an important timber tree found in tropical deciduous forests)

1. Mosquitoes breed in stagnant water.
2. India is one of the twelve megadiverse biodiversity countries of the world.
3. Chir, deodar, and pine are types of coniferous trees.
4. The Ganga-Brahmaputra delta has extensive mangrove forests.

Summary

The chapter "India: Climate, Vegetation and Wildlife" explores the diverse environmental conditions that exist in our country. India's varied climate, ranging from tropical to alpine, supports different types of natural vegetation, including evergreen forests, deciduous forests, thorny forests, and mangroves. This rich vegetation, in turn, supports India's diverse wildlife, including many endemic and endangered species. The chapter emphasizes the importance of conserving India's natural resources and biodiversity.

Understanding the relationship between climate, vegetation, and wildlife helps us appreciate the ecological balance that maintains our environment and the need for sustainable development. Through this chapter, students learn about the ecological connections and the importance of conservation measures to protect India's rich natural heritage.