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NTA Abhyas NEET2020BotanyEcosystemPractice

Secondary productivity is defined as

Options

  1. Athe rate of production of organic matter during photosynthesis.
  2. Bthe available biomass for the consumption to heterotrophs.
  3. Cthe rate of formation of new organic matter by consumers.
  4. Dgross primary productivity minus respiration losses.

Correct answer

C. the rate of formation of new organic matter by consumers.

Step-by-step solution

Gross primary productivity of an ecosystem is the rate of production of organic matter during photosynthesis. A considerable amount of GPP is utilised by plants in respiration. Gross primary productivity minus respiration losses (R), is the net primary productivity (NPP). GPP – R = NPP Net primary productivity is the available biomass for the consumption to heterotrophs (herbiviores and decomposers). Secondary productivity is defined as the rate of formation of new organic matter by consumers.

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