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NEET2010BotanyPhotosynthesis in Higher PlantsActual

C ₄ -plants are more efficient in photosynthesis than C ₃ -plants due to

Options

  1. Ahigher leaf area
  2. Bpresence of larger number of chloroplasts in the leaf cells
  3. Cpresence of thin cuticle
  4. Dlower rate of photorespiration

Correct answer

D. lower rate of photorespiration

Step-by-step solution

The C₄ pathway is certainly more efficient than the C₃ pathway in the sense of carbon fixation. In C₃ plants, carbon dioxide and oxygen are both present. This means that most of the ribulose-1,5-bisphosphate is carboxylated, but some of the ribulose-1,5-bisphosphate is oxygenated. This results in photorespiration. So the correct option is Lower rate of photorespiration.

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