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Equatorial Forest Region

NCERT 9th Class (CBSE) Social Science: Natural Vegetation and Wild Life 

Question: What is natural vegetation or virgin vegetation?

Answer: It refers to a plant community which has grown naturally without human aid and has been left undisturbed by human beings for a long time.

Question: What is flora and fauna?

Answer: Flora: Plants of a particular region or period.
Fauna: The species of animals.

Question: “Land and soil affects the natural vegetation directly and indirectly”. Justify by giving two examples.


  1. The sandy soil of the desert support cactus and thorny bushes.
  2. Wet, marshy, deltaic soil supports mangroves.

Question: What is an ecosystem?

Answer: An ecosystem includes all of the living things (plants, animals and organisms) in a given area, interacting with each other, and also with their non-living environments (weather, earth, sun, soil, climate, atmosphere). Ecosystems are the foundations of the Biosphere and they determine the health of the entire earth system.

Question: Name two non-flowering plants.

Answer: Ferns, algae and fungi.

Question: Name any two factors that form the flora and the fauna?

Answer: Soil, relief, climate and drainage.

Question: What is a biome?

Answer: A very large ecosystem on land having distinct types of vegetation and animal life is called a biome.

Question: Mention any two regions having tropical evergreen forests.

Answer: The Western Ghats, plains of West Bengal and Odisha, and the north-eastern India.

Question: Name two commercially useful trees of the Tropical Rain Forests.

Answer: Ebony, mahogany and rosewood.

Question: Mention any two factors responsible for deforestation.


  1. Overgrazing by animals
  2. Careless management of forests

Question: Where are the rhinoceros found?

Answer: In swampy and marshy lands of Assam and North-West Bengal.

Question: The ‘Tropical Rain forests appear green all the year round’. Give reason.

Answer: There is no definite time for trees to shed their leaves.

Question: Which are the most widespread forests of India?

Answer: Tropical Deciduous Forests.

Question: On the basis of the availability of water, tropical deciduous forests are divided into two parts. What are these two Categories?

Answer: Dry deciduous and Moist deciduous.

Question: Name one important trees each of the Moist Deciduous and Dry deciduous Forests.

Answer: Moist Deciduous – Teak.
Dry Deciduous – Sal.

Question: Name any two useful trees of the Thorn Forests.

Answer: Kikar, babul, khair and date palm.

Question: Mention any two values which are reflected by the ecosystem?

Answer: Importance of interdependent and interrelationship.

Question: How do the human beings influence the ecology of a region?

Answer: The greed of human beings leads to over utilization of these resources. They cut the trees and kill the animals creating ecological imbalance.

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