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Which of the following is true of C4 plants?

  • (a) They show photorespiration at high rates. Your answer
  • (b) Their first product is 3-PGA. Your answer
  • (c) They tolerate higher temperatures than C3 plants. Correct
  • (d) Their mesophyll cells have RuBisCO. Your answer
Your answer: Correct answer: (c)
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Explanation

Why (c) is correct

C4 plants tolerate higher temperatures and show higher photosynthesis at high temperature than C3 plants.

Why the other options are wrong

  • (a) · your answer C4 plants show little or no photorespiration.
  • (b) · your answer Their first product is OAA.
  • (d) · your answer Their mesophyll cells lack RuBisCO.
NCERT point: C4 plants have a higher temperature optimum.
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