Class 9 Social Science - BIHAR
Natural Vegetation and Wildlife
The chapter 'Natural Vegetation and Wildlife' in Class 9 Social Science (Geography) for BSEB explores the rich biodiversity of India. It covers the factors determining flora and fauna, such as relief, climate (temperature and rainfall), and photoperiod. Students learn about the five major types of natural vegetation in India: Tropical Evergreen, Tropical Deciduous, Thorn Forests, Montane Forests, and Mangrove Forests. The chapter also highlights the significance of wildlife, the threats they face due to human intervention, and various conservation measures taken by the government like biosphere reserves, national parks, and wildlife sanctuaries to protect endangered species.
Start Learning FreeKey Concepts
Natural Vegetation
Refers to a plant community which has grown naturally without human aid and has been left undisturbed by humans for a long time.
Flora and Fauna
Flora denotes the plants of a particular region or period, while fauna represents the animal species of a specific region or period.
Tropical Deciduous Forests
The most widespread forests in India, also known as monsoon forests, where trees shed their leaves during the dry season to conserve water.
Endemic and Exotic Species
Endemic species are native to a particular region, whereas exotic species are plants and animals introduced from other parts of the world.
Biosphere Reserve
A protected area meant for preserving the biological diversity and genetic integrity of plants and animals within natural ecosystems.
Important Formulas
Board Exam Info
In the Bihar (BSEB) Class 9 Social Science examinations, this chapter typically carries around 4 to 6 marks. Questions usually include objective (multiple-choice), short-answer questions defining vegetation types or conservation methods, and long-answer questions explaining the distribution of forests and wildlife in India.
Frequently Asked Questions
What is the difference between Evergreen and Deciduous forests?
Evergreen forests remain green throughout the year as they do not shed all their leaves at the same time, requiring heavy rainfall (>200 cm). Deciduous forests shed their leaves during the dry season to conserve moisture and receive moderate rainfall (70-200 cm).
Why is India one of the twelve mega biodiversity countries of the world?
India has a vast variety of flora and fauna due to its diverse relief features, varying climatic conditions, temperature ranges, and different types of soil and rainfall distribution across the country.
What steps has the government taken to protect wildlife in India?
The government has set up 18 biosphere reserves, numerous national parks, wildlife sanctuaries, and zoological gardens, and launched specific conservation projects like Project Tiger and Project Rhino.
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