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Which of the statements given above is/are correct?
i. The dark reactions of photosynthesis are temperature controlled and are more sensitive to temperature changes compared to light reactions.
ii. C4 plants have a higher rate of photosynthesis at elevated temperatures than C3 plants.
iii. Tropical plants generally have a lower temperature optimum for photosynthesis than plants adapted to temperate climates.
iv. Water stress affects photosynthesis primarily by reducing the availability of CO2 due to stomatal closure.
  • a)
    i and iii
  • b)
    ii and iv
  • c)
    i, ii, and iv
  • d)
    iii and iv
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Which of the statements given above is/are correct?i. The dark reactio...
- Statement i is incorrect because the dark reactions are not more sensitive to temperature changes; in fact, the light reactions are also temperature sensitive but to a lesser extent.
- Statement ii is correct; C4 plants perform better at higher temperatures compared to C3 plants.
- Statement iii is incorrect; tropical plants have a higher temperature optimum for photosynthesis than temperate plants.
- Statement iv is correct; water stress indeed leads to stomatal closure, thereby reducing CO2 availability.
Thus, the correct statements are ii and iv.
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Which of the statements given above is/are correct?i. The dark reactions of photosynthesis are temperature controlled and are more sensitive to temperature changes compared to light reactions.ii. C4 plants have a higher rate of photosynthesis at elevated temperatures than C3 plants.iii. Tropical plants generally have a lower temperature optimum for photosynthesis than plants adapted to temperate climates.iv. Water stress affects photosynthesis primarily by reducing the availability of CO2 due to stomatal closure.a)i and iiib)ii and ivc)i, ii, and ivd)iii and ivCorrect answer is option 'B'. Can you explain this answer?
Question Description
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