Question

LEVEL 1 1. What is the topmost layer of forest called? 2. Trees reduce ________ pollution. 3. Trees hold the __________ together to prevent soil erosion. 4. The primary source of energy for food chain is____________. 5. Organisms that can make their own food are called ___________. LEVEL 2 1. Why are forest known as “ green lungs “? 2. Explain how forest prevent flow of runoff water? 3. Define – i) food chain ii) food web iii) biodiversity. 4. List 5 products we get from forest. 5. List some consequences of deforestation. LEVEL 3 1. Explain why there is a need of variety of animals and plants in a forest. 2. How can forest be conserved? 3. Write any four factors which are responsible for the destruction of forest. 4. Explain why there is no waste in a forest. 5. Explain the role of forest in maintaining the balance between oxygen and carbon dioxide in the atmosphere. 6. Why is it dark inside a forest? 7. Mention any 2 ways in which plants and animals are interdependent. 8. We are often advised to plant more trees and not to cut the existing ones. Why? What values are shown by a person who practices tree conservation? 9. Deforestation may lead to floods. Why? 10. Paheli while moving in a forest observed that there was no noice pollution though lots of heavy vehicles were passing from the nearby highway, explain why?

Answer 1

Answer:

Explanation:

SCIENCE. Nutrition in Plants. 1. Name a gas used in photosynthesis. Name a ... 3. What do you understand by the term nutrition? Name the two main modes of nutrition. ... What name is given to the organisms – (a) which can make their own food? ... What prevents the mercury level in the glass tube of a clinical thermometer ...