FA4 CLASS-X

CLASS X FORMATIVE ASSESSMENT-4

MANAGEMENT OF NATURAL RESOURCES

DATE: ..................

1. Identify the following items as biodegradable and non biodegradable.                                     Rubber, metals, plastic,earthen pot.
2.  The green plants in terrestrial ecosystem capture about …. Percent of energy of sunlight. (1/10/100)
3. What is the percentage of the amount of organism matter that is present at each step of the trophic level. (1/10/100)
4. Complete the food chain. Grass---àGrass hopper---à…….--àsnake--à……
   (deer and lion/frog and vulture).
5. A complex food chain forms a ………… (foodweb/foodnet/foodchains)
6. Flow of energy in an ecosystem is from Producers to ……. (tertiary consumers/Herbivores)
7. How many Oxygen atoms are there in an Ozone molecule. (2/3/4/5)
8. Ozone is deadly………….. (poison/useful/useless)
9. Ozone shields the surface of earth from harmful…….. rays. (UV/IR/VS)
10. How is ozone layer formed in atmosphere?
11.  Expand (a) CFC (b) UNEP
12. Change in attitude also have role to play in managing the garbage waste. Discuss some methods to manage garbage in factory estate.
13. Why plastic glasses were changed to kulhads.
14. Name any two Biotic and abiotic components of pond ecosystem.

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