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[A] : Each food-level in an ecosystem i...

[A] : Each food-level in an ecosystem is called trophic level .
[R] : When an organism benefitted with affecting the other is called commensalism .

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

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Food levels in an ecosystem are called

Food levels in an ecosystem are called:

Trophic levels in ecosystem is formed by

Trophic levels in ecosystem is formed by:

[A] : There is a grudual increase in the energy content at successive trophic level from producer to consumers . [R]:When one organism benefits the other in a chain , it is called commensalism .

[A] : When the organisms live together in such a manner that one organism benefitted , while other has no effects , it is called commensalism . [R] : In commensalism one partner derives benefit from the other partner without in any way benefitting or harming it .

The first trophic level in an ecosystem consists of:

Select an incorrect statemnet for ecosystem and trophic levels :

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