Question 5 - Case Based Questions (MCQ) - Chapter 15 Class 10 - Our Environment

Study the following food web and answer any four questions from (a) to (e)..

(a) Which of these is the producer?

(i) K

(ii) L

(iii) J

(iv) F

Answer:

(a)

F  is the producer since it does not consume any other organism.

So, the correct answer is (iv).

(b) Which organisms are primary consumers?

(i) F, L, H, K

(ii) M, G, J, H

(ii) J, L, K, M

(iv) F, K, M, H

Answer:

Primary consumers are those organisms that consume the producers.

So, the primary consumers here are M,G,J and H.

So, the correct answer is (ii).

(c) Which organisms will receive maximum energy in the ecosystem?

(i) M

(ii) K

(iii) F

(iv) None of these

Answer:

Producers receive the maximum energy in a food chain.

Here, F is the producer.

So, the correct answer is (iii).

(d) Which organisms represent top level carnivores?

(i) K

(ii) M

(iii) G

(iv) Both (i) and (ii)

Answer:

Top level carnivores are at the apex of the food chain.

Here, K is at the apex.

So, the correct answer is (i).

(e) What will happen if we kill all the organisms in one trophic level?

(i) Population of organisms in previous trophic level will increase.

(ii) Population of organism in previous trophic level will decrease.

Answer:

If we kill all the organisms of one trophic level, it will lead to an increase in the number of organisms at the lower trophic level and decrease in the number of organisms at the higher trophic level.

So, the correct answer is (i).