Question

Trophic levels in ecosystem are formed by

• A. only bacteria
• B. only plants
• C. only herbivores
• D. organisms linked in food chain

Answer 1

The correct option is D organisms linked in food chain

Trophic levels in an ecosystem are formed by organisms linked in food chain. It starts from producer level and usually ends at secondary or tertiary consumer levels.

So, the correct answer is option D, organisms linked in food chain.