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NEET2005BotanyPhotosynthesis in Higher PlantsActual

As compared to a C ₃ -plant, how many additional molecules of ATP are needed for net production of one molecule of hexose sugar by C ₄ -plants?

Options

  1. Atwo
  2. Bsix
  3. Ctwelve
  4. Dzero.

Correct answer

C. twelve

Step-by-step solution

18 ATP molecules are required by C ₃ plants for the synthesis of one molecule of hexose sugar while 30 ATP molecules are needed by the C ₄ plants for the same. Thus, C ₄ plants have a need of 12 ATP molecules extra than C ₃ plants for the synthesis of one molecule of hexose sugar.

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