Question

20. Study the following food web and answer any four questions
M
K
J
(iv) G
H
F
G
(a) Which of these is the producer?
(i) K
(ü) L
(iii) J
(b) Which organisms are primary consumers?
(i) F, L, H, K
(ii) M, KJ,H
(ü) J, L,K, M
(iv) F, K, M,H
(c) Which organisms will receive maximum energy in the ecosystem?
(1) M
(ii) K
(iv) None of these
(d) Which organisms represent top level carnivores?
(i) K
(ü) M
(iii) G
(iv) Both (i) and (ii)
(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
(iii) Population of organism in next trophic level will increase,
(iv) This will not affect the population of any trophic level
(iii) G​

Answer 1

Food wed: The network of the interconnected food chain at different tropic levels in a biotic community.

Explanation:

A)

• Producers: The organism that has the capability of producing its food. They reside at the bottom of the food chain.

B)

• Primary consumers: The organism that feeds directly on the producers and they are above the producers in the food chain.

C)

• Energy flow is the sequential process of the movements of energy in an ecosystem.
• Ten per cent law of energy transfer: The transfer of energy from one tropic level to another trophic level is accompanied by loss of energy at each level. Thus, at each transfer, only 10% of the total energy is available to the next tropic level. So, the producer will have the maximum energy in an ecosystem.

D)

• Top carnivores: The carnivore which is not eaten by others are called top carnivores. They are the top level in the food chain.

E)

• The answer is option iii. At one tropic level, if we kill all the organisms, their transfer of energy will stop as it is unidirectional. The organism of the next level will not have access energy(in the form of food).

Answer 2

Answer:

pls drop the answer in the comments

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Explanation: