Match List I with List II :List I List II A. Productivity I. Gross primary productivity minus respiration losses B. Net primary productivity II. Rate of formation of new organic matter by consumers C. Gross primary productivity III. Rate of biomass production D. Secondary productivity IV. Rate of production of organic matter during photosynthesis
Choose the correct answer from the options given below :
| List I | List II |
|---|---|
| A. Productivity | I. Gross primary productivity minus respiration losses |
| B. Net primary productivity | II. Rate of formation of new organic matter by consumers |
| C. Gross primary productivity | III. Rate of biomass production |
| D. Secondary productivity | IV. Rate of production of organic matter during photosynthesis |
Answer: (A) A-III, B-I, C-IV, D-II. Answer: (A) Productivity is the rate of biomass production (III); NPP is GPP minus respiration losses (I); GPP is the rate of production of organic matter during photosynthesis (IV); secondary productivity is the rate of formation of new organic matter by consumers (II).
- A.A-III, B-I, C-IV, D-II✓
- B.A-I, B-II, C-III, D-IV
- C.A-I, B-III, C-IV, D-II
- D.A-III, B-I, C-II, D-IV
Correct Answer
(A) A-III, B-I, C-IV, D-II
Solution & Explanation
Answer: (A) Productivity is the rate of biomass production (III); NPP is GPP minus respiration losses (I); GPP is the rate of production of organic matter during photosynthesis (IV); secondary productivity is the rate of formation of new organic matter by consumers (II). This gives A-III, B-I, C-IV, D-II, option (1)/(a). All four definitions are stated verbatim in NCERT section 12.2. NCERT Reference: Ch 12, p.207 — “rate of formation of new organic matter by”