Question

Match List-I with List-II:

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

Choose the correct answer from the options given below:

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

Answer 1

The Correct Option is C

To correctly solve this problem, each concept in List-I must be precisely matched with its corresponding explanation in List-II. A detailed analysis of each item is as follows:

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

1. (A) Standing state: Defined as the total quantity of nutrients present in the soil at a specific moment, this aligns with (IV).
2. (B) Secondary productivity: This denotes the pace at which organic matter is generated by consumers, correlating with (II).
3. (C) Standing crop: It quantifies the total mass of living organisms within a defined trophic level at a particular point in time, matching (III).
4. (D) Net primary productivity: This refers to the biomass that is accessible for heterotrophic consumption, fitting with (I).

The definitive matching of each concept to its correct explanation is: (A) - (IV), (B) - (II), (C) - (III), (D) - (I).