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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): For any ecosystem, Gross Primary Productivity is always greater than Net Primary Productivity. Reason (R): Plants utilize a considerable amount of Gross Primary Productivity in their own respiration. In the light of the above statements, choose the most appropriate answer from the options given bel

Options

  1. ABoth (A) and (R) are true and (R) is the correct explanation of (A)
  2. BBoth (A) and (R) are true but (R) is not the correct explanation of (A)
  3. C(A) is true but (R) is false
  4. D(A) is false but (R) is true

Correct answer

A. Both (A) and (R) are true and (R) is the correct explanation of (A)

Step-by-step solution

Gross Primary Productivity (GPP) of an ecosystem is the rate of production of organic matter during photosynthesis. A considerable amount of GPP is utilized by plants in respiration (R). Gross primary productivity minus respiration losses (R) is the net primary productivity (NPP). Therefore, GPP - R = NPP , which means GPP is always greater than NPP. Thus, both Assertion (A) and Reason (R) are true, and (R) is the correct explanation of (A). Answer: Both (A) and (R) are true and (R) is the correct explanation of (A

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