A) plants
B) animals
C) organisms linked in food chain
D) carnivores
Correct Answer: C
Solution :
The trophic level includes all organisms of a food chain. That is autotrophs, herbivores and carnivores, e.g; In a terrestrial food chain, all green plants form primary trophic level and all herbivores which eat these plants form 2nd trophic level. Third trophic level is formed by primary carnivores or secondary consumers which eat herbivores and next trophic level i.e., 5th is formed by tertiary consumers which feed on secondary consumers, 5th trophic level is formed by top consumers which feed on carnivores.
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