Q.
Column I Column II
a Producers 1 Fungi
b Herbivores 2 Molluscs
c Primary carnivore 3 Fishes
d Saprotrophs 4 Algae

 1557  237 Ecosystem Report Error

Solution:

Correct answer is (b) (a)-(4), (b)-(2), (c)-(3), (d)-(1)