Q6 of 163 Page 226

What are planktons?

Planktons are minute organisms that live in the water but are incapable of swimming against a current. They are a source of food to aquatic organisms like fishes.


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4

Why are plants called producers?

 5

What name has been given to those organisms which break down the complex organic compounds present in dead animals and plants?

 7

State whether the following statements are true or false:

(a) In biology, human beings are called producers.


(b) Secondary consumers and tertiary consumers, both are carnivores.

 8

Which category of organisms forms the starting point of a food chain?