Question

(a) Match the terms given in column I with the terms given in column II and column III having the same meaning:

	Column I	Column II	Column III
(i)	Secondary consumer	Herbivore	1st trophic level
(ii)	Primary consume	Autotroph	3rd trophic level
(iii)	Producer	Carnivore	4th trophic level
(iv)	Tertiary consumer	Large carnivore	2nd trophic level

(b) Give one example of a food chain having four organisms. Below each organism write the three appropriate terms from the part (a) above which you think it represents.

Answer 1

(a)

Column I	Column II	Column III
(1) Secondary consumer	Carnivore	3rd trophic level
(2) Primary consumer	Herbivore	2nd trophic level
(3) Producer	Autotroph	1st trophic level
(4) Tertiary consumer	Large carnivore	4th trophic level

(b)

Grass → Grasshopper → Frog → Snake

Organism	Column I	Column II	Column III
Grass	Producer	Autotroph	1st trophic level
Grasshopper	Primary consumer	Herbivore	2nd trophic level
Frog	Secondary consumer	Carnivore	3rd trophic level
Snake	Tertiary consumer	Large carnivore	4th trophic level