Which group of organisms are not constituents of a food chain?

  1. Grass, lion, rabbit, wolf
  2. Plankton, man, fish, grasshopper
  3. Wolf, grass, snake, tiger
  4. Frog, snake, eagle, grass, grasshopper

Select the correct option:

  1. (i) and (iii)
  2. (iii) and (iv)
  3. (ii) and (iii)
  4. (i) and (iv)

Answer

The flow of energy from one organism to another taking part at various biotic levels forms a food chain. A food chain describes the feeding relationships between the organisms within that ecosystem.

Food chain (ii) is an aquatic food chain so grasshopper cannot be a part of it.

In food chain (iii), wolf, snake and tiger all are carnivores. There is no herbivore to eat grass or herbivore is missing from the chain.

The correct option is C.

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