Answers to CE MC Questions (1992-2000)

ECOSYSTEM

Question	Ans.	Explanation
9619	C	Decomposers are biotic components of an ecosystem.
0037	B
9929	A	This diagram shows a nutrient cycle of an ecosystem.
0024	C	Decomposers only help to release nutrients to producers.
9217	C	Producers refer to vegetation only. Snakes and earthworms belong to consumers.
9447	D	The key hint is “break down of organic matter”.
9825	D	Tigers are carnivores.
9241	B
9520	D	Leaves in the tropical rain forests should be broad in order to get more sunlight. They also have drip-tips to drain away excess water.
9615	B	Tropical rain forests do not have fertile soil. It has luxuriant growth of trees because the nutrient cycling is very fast. Nutrients are absorbed by green plants quickly without storing in the soil mass.
9315	A	Similar question as 9615.
9411	C	Similar question as 9615 and 9315.
0027	B	Plantation is a large farm growing only one type of cash crop.
9829	-	None of the choices is correct. Only (1) is correct.
9930	A	Similar question as 9829.
9519	A
9816	B	Soil, biomass and litter are the three important storage pool of nutrients in an ecosystem.
9321	A
0036	B
0026	B
9632	D
9747	B	Shifting agriculture does less harm to the environment. Therefore, it is not necessary to prohibit it.
9746	A	Runoff should be increased due to deforestation.