Class 9 Social Science - CBSE
Natural Vegetation and Wildlife
The Class 9 CBSE chapter 'Natural Vegetation and Wildlife' explores India's rich biodiversity, examining the plant and animal life that exists in its natural state. Students learn about the factors influencing vegetation, such as relief, climate, temperature, and photoperiod, which create different types of forests like tropical evergreen, deciduous, thorn forests, montane, and mangrove forests. The chapter also highlights the distribution of wildlife, conservation efforts like biosphere reserves and wildlife sanctuaries, and the urgent need to protect endangered species. For board exams, this chapter is crucial as it forms the base for map-reading questions and conceptual queries on India's physical geography.
Start Learning FreeKey Concepts
Natural Vegetation
Refers to a plant community that 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 species of animals native to a given region.
Tropical Evergreen Forests
Dense forests found in areas receiving more than 200 cm of rainfall with a short dry season, where trees do not shed their leaves all at once.
Tropical Deciduous Forests
The most widespread forests in India, also called monsoon forests, where trees shed their leaves for about six to eight weeks in dry summer.
Biosphere Reserve
A protected area meant for preserving the genetic diversity in ecosystems of various plants and animals, extending over large protected areas.
Important Formulas
Board Exam Info
In the CBSE Class 9 Social Science (Geography) question paper, this chapter typically carries around 4 to 6 marks. Questions usually include 1-mark objective questions, 3-mark short-answer questions explaining characteristics of specific forest types, and map-work questions asking to locate national parks, wildlife sanctuaries, or forest types.
Frequently Asked Questions
What is the difference between natural vegetation and cultivated vegetation?
Natural vegetation grows entirely on its own without human interference, whereas cultivated vegetation consists of crops and orchards grown by humans for agricultural purposes.
Why are Tropical Evergreen Forests called 'evergreen'?
They do not shed their leaves all at once during any particular time of the year; different types of trees shed their leaves at different times, keeping the forest green year-round.
Why is wildlife conservation necessary?
Wildlife conservation is essential to maintain ecological balance, preserve biodiversity, prevent the extinction of endangered species, and ensure the survival of human life on Earth.
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