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Target Exam

CUET

Subject

Biology

Chapter

Ecosystem

Question:

Match List-I with List-II:

List-I

Concepts

                           List-II

                          Explanation
 (A) Standing state (I) Available biomass for the consumption of heterotrophs
(B) Secondary productivity (II) Rate of formation of organic matter by consumers
(C) Standing crop (III) Mass of living matter in a trophic level at a given time
(D) Net primary productivity (IV) Amount of mineral nutrients in the soil at a given time

Choose the correct answer from the options given below:

Options:

(A)-(IV), (B)-(III), (C)-(II), (D)-(I)

(A)-(I). (B)-(II), (C)-(III), (D)-(IV)

(A)-(IV), (B)-(II), (C)-(III), (D)-(I)

(A)-(I), (B)-(IV), (C)-(II), (D) - (III)

Correct Answer:

(A)-(IV), (B)-(II), (C)-(III), (D)-(I)

Explanation:

The correct answer is Option (3) - (A)-(IV), (B)-(II), (C)-(III), (D)-(I)

List-I

Concepts

                           List-II

                          Explanation
 (A) Standing state (IV) Amount of mineral nutrients in the soil at a given time
(B) Secondary productivity (II) Rate of formation of organic matter by consumers
(C) Standing crop (III) Mass of living matter in a trophic level at a given time
(D) Net primary productivity (I) Available biomass for the consumption of heterotrophs

A. The amount of nutrients, such as carbon, nitrogen, phosphorus, calcium, etc., present in the soil at any given time, is referred to as the standing state.

B. Secondary productivity is defined as the rate of formation of new organic matter by consumers.

C. Each trophic level has a certain mass of living material at a particular time called as the standing crop.

D. Net primary productivity, is the amount of organic matter available for consumption by heterotrophs, such as herbivores and decomposers. It is calculated by subtracting the energy used by plants for respiration (R) from the gross primary productivity (GPP): GPP - R = NPP.

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