Which of these organisms occupies the 3rd trophic
level?

Robert01

5 years ago

The answer is B.

From the pyramid representation of a food chain, it can be inferred that the small fish occupies the third trophic level.

Trophic level is the number of links in a food chain that involves the transfer of energy from a producer to the final consumers.

The organisms in the pyramid can be rewritten linearly as:

Phytoplankton(producer) → Tadpole(primary consumer) → Small fish(secondary consumer)→ Big fish(tertiary consumer) → King fisher(tertiary consumer).

Each organism represents a trophic level.

Thus, small fish is a third trophic level.

C.A.G

10 years ago

The phytoplankton, tadpole and small fish are at the 1st trophic level because they can be eaten by the big fish which is at the 2nd trophic level and in turn the big fish can be eaten by the king fisher(a bird that feeds on fish) which is why it is at the 3rd trophic level.

Fredemeka

10 years ago

I need some explanation as to y this answer is A