Question

Which of the following statements regarding food chain is false?

• A. In an aquatic ecosystem, grazing food chain is the major conduit for energy flow.
• B. In terrestrial ecosystems, a large fraction of energy flows through detritus food chain.
• C. The detritus food chain begins with dead organic matter.
• D. Primary consumers belong to the first trophic level.
• E. Animals like cockroaches and crows are omnivores.

Answer 1

Answer: (D)

Primary consumers belong to second trophic level. They depend on plants (directly or indirectly) for their food needs. They are also known as herbivores, e.g., zooplankton, grasshopper, and cow.