Question

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 :

• A. A-III, B-I, C-IV, D-II
• B. A-I, B-II, C-III, D-IV
• C. A-III, B-I, C-II, D-IV
• D. A-I, B-III, C-IV, D-II

Hint:

Gross is the Total check, Respiration is the Tax, and Net is what you actually get to Keep (and pass on to the next level).

Answer 1

The Correct Option is A

Ecosystem energetics involves the rate at which organic matter is created. The correct matches are:
• Productivity (A): General term for the rate of biomass production (III).
• Net primary productivity (B): The organic matter available to consumers, calculated as Gross primary productivity minus respiration losses (I). Equation: $NPP = GPP - R$.
• Gross primary productivity (C): The total rate of production of organic matter during photosynthesis by producers (IV).
• Secondary productivity (D): Defined as the rate of formation of new organic matter by consumers (II). Matching these gives A-III, B-I, C-IV, D-II.