Q3 of 14 Page 540

Name the organisms belonging to the second and fourth trophic levels in the food chain comprising the following:

Frogs, Plants, Snakes, Hawks, Insects.

The food chain will be-

Plants → Insects → frogs → snakes → Hawks


Insect belongs to second trophic level and snakes belong to fourth trophic level.


More from this chapter

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1

State one reason to justify the position of man at the apex of most food chains.

 2

If a harmful chemical enters a food chain comprising snakes, hawks, mice and plants, which of these organisms is likely to have maximum concentration of the harmful chemicals in its body?

 4

What are the functions of an ecosystem?

 5

Give proper term for each of the following:

(a) Smaller constituent operational unit of biosphere.


(b) Accumulation of non-biodegradable toxic substance in the increasing order in a food chain.