What Is Food Chain

Q. Energy flow through different trophic levels in any food chain or food web is unidirectional.

1. True
2. False

Q. Identify the possible link "A" in the following food chain:

Plant → Insect → Frog → "A" → Eagle

1. Rabbit
2. Lion
3. Snake
4. Deer

Q. Which of the following statements regarding food chain is false?

1. In aquatic ecosystem, grazing food chain is the major conduit for energy flow
2. In terrestrial ecosystems, a large fraction of energy flows through detritus food chain
3. The detritus food chain begins with dead organic matter
4. Primary consumers belong to the first trophic level

Q. A food chain in an ecosystem represents the __________________

1. Feeding relationship
2. (a) and (b)
3. Ecological succession
4. Energy flow