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Find the odd one with respect to double carboxylation.

  • (a) maize Your answer
  • (b) sugarcane Your answer
  • (c) sorghum Your answer
  • (d) pea Correct
Your answer: Correct answer: (d)
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Explanation

Why (d) is correct

Double carboxylation (by PEP carboxylase and RuBisCO) happens in C4 plants. Maize, sugarcane and sorghum are C4; pea is a C3 plant, so it is the odd one out.

Why the other options are wrong

  • (a) · your answer Maize is a C4 plant with double carboxylation.
  • (b) · your answer Sugarcane is a C4 plant.
  • (c) · your answer Sorghum is a C4 plant.
NCERT point: C3 plants have only one carboxylation, by RuBisCO.
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