Question

In an aquatic ecosystem, the trophic level equivalent to cows in grasslands is:

• A. Nekton
• B. Shark
• C. Phytoplankton
• D. Zooplankton

Answer 1

The correct option is D

Zooplankton

In a grassland ecosystem, herbivores like cows are primary consumers feeding directly on the producers i.e grass or green plants. In an aquatic ecosystem, phytoplankton are producers and they are grazed by zooplankton, the primary consumers. Nektons include mollusks, lobsters, crabs, etc. form the secondary consumers. Sharks are the tertiary consumers in an aquatic ecossytem.