NEET2026BiologyChapterActual
Match List-I with List-II regarding productivity in an ecosystem. List-I List-II (a) Gross primary productivity (i) Available biomass for the consumption to heterotrophs (b) Net primary productivity (ii) Approximately 170 billion tons (dry weight) of organic matter (c) Secondary productivity (iii) Rate of formation of new organic matter by consumers (d) Annual NPP of whole biosphere (iv) Rate of production of organic
Options
- A(a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)
- B(a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
- C(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
- D(a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)
Correct answer
D. (a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)
Step-by-step solution
Gross primary productivity (GPP) of an ecosystem is the rate of production of organic matter during photosynthesis. Therefore, (a) matches with (iv). Net primary productivity (NPP) is the gross primary productivity minus respiration losses ( R ). It is the available biomass for the consumption to heterotrophs (herbivores and decomposers). Therefore, (b) matches with (i). Secondary productivity is defined as the rate of formation of new organic matter by consumers. Therefore, (c) matches with (iii). The annual net p