Question

Which of the following 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. (ii) and (iii)​
• B. (i) and (iii)​
• C. (iii) and (iv)
• D. (i) and (iv)​

Answer 1

The correct option is A (ii) and (iii)​

(ii) and (iii).​

• In group (ii) Plankton and fish belong to the aquatic food chain, whereas grasshopper is found in terrestrial ecosystems. Hence the group not a constituents of a food chain.​
• In group (iii) Wolf, grass, snake, tiger, there is no herbivore animal to consume grass. Hence the group not a constituents of a food chain.​