Question

Seaweed belongs to trophic level :

Answer 1

An ecosystem consists of biotic and abiotic components. Biotic components include producer, consumer and decomposer.

In ocean ecosystem, first trophic level consists of producers. These include photosynthetic organisms like algae and seaweed (macroalgae).

The second trophic level consists of primary consumers which feed on producers. They are herbivores. These include fishes.

The third trophic level consists of secondary consumers which feed on primary producers. They are carnivores. These include shark.

Thus, the correct answer is 'Primary producer.'