Photosynthetic Adaptations · NCERT Biology

Which statement correctly compares C3 and C4 plants?

  1. C3 plants have Kranz anatomy, C4 plants do not
  2. C4 plants show negligible photorespiration
  3. C3 plants fix CO2 using PEP carboxylase
  4. C4 plants are confined to cold climates
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Correct answer: C4 plants show negligible photorespiration

C4 plants have a mechanism to concentrate CO2, resulting in negligible photorespiration. C3 plants lack this adaptation and show higher photorespiration.

Difficulty: Medium Question 19 of 20

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