Question

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

(i) Grass, lion, rabbit, wolf

(ii) Plankton, man, fish, grasshopper

(iii) Wolf, grass, snake, tiger

(iv) Frog, snake, eagle, grass, grasshopper

• A. (i) and (iii)
• B. (iii) and (iv)
• C. (ii) and (iii)
• D. (i) and (iv)

Answer 1

The correct option is C

(ii) and (iii)

The correct option is C.

Explanation of correct option:

1. The sequence of events in an ecosystem known as a "food chain" occurs when one live organism consumes another organism, which is then eaten by a bigger organism.
2. A food chain is created by the transfer of nutrients and energy from one creature to another at various trophic levels.
3. The feeding habits or connections between living things are also explained by the food chain.
4. A food chain starts with producers who create food, moves on to consumers who consume it, and finally, it ends with the apex predator.
5. Plankton in option (ii) does not consume grass.
6. Since none of them consumes grass in option (iii), choice c) is the correct response.

Final answer: Options (ii) and (iii) are not constituents of the food chain.