Question

In an aquatic ecosystem, heron is the

• A. Producer
• B. Tertiary consumer
• C. Decomposer
• D. Primary consumer

Answer 1

The correct option is B Tertiary consumer

In an aquatic ecosystem, producers are small plants like pistia, azolla which are consumed by primary consumers like aquatic insects, snails etc.
These primary consumers are consumed by secondary consumers like small fishes, frogs. Heron is the tertiary consumer which feeds on small fishes and frogs.
Bacteria and fungi are the decomposers of the aquatic ecosystem.