Question

Question 15
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) (ii) and (iv)
(c) (ii) and (iii)
(d) (i) and (iv)

Answer 1

Option (c) is correct.
The sequence of living organisms in a community in which one organism consumes another organism to transfer energy is called a food chain.
Food chain (ii) is an aquatic food chain in which grasshopper cannot take part.
The correct sequence is Plankton $\to$ Zooplankton $\to$ Fishes $\to$ Man

In food chain (iii) wolf, snake and tiger are carnivores, there is no herbivore to eat grass. (i) is forest food chain
Grass $\to$ Rabbit $\to$ Wolf $\to$ Lion