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Compared with temperate plants, tropical plants have

  • (a) a lower temperature optimum for photosynthesis Your answer
  • (b) a higher temperature optimum for photosynthesis Correct
  • (c) the same temperature optimum Your answer
  • (d) no temperature optimum Your answer
Your answer: Correct answer: (b)
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Explanation

Why (b) is correct

Tropical plants have a higher temperature optimum for photosynthesis than plants adapted to temperate climates.

Why the other options are wrong

  • (a) · your answer Their optimum is higher, not lower.
  • (c) · your answer The optimum differs with habitat.
  • (d) · your answer All plants have a temperature optimum.
NCERT point: C4 plants also have a higher temperature optimum than C3 plants.
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