Question:

$ C{{O}_{2}} $ acceptor in $ {{C}_{3}} $ cycle is

Updated On: Jun 17, 2022
  • OAA
  • RuBP
  • PEP
  • Malic acid
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The Correct Option is B

Solution and Explanation

Ribulose 1, 5- biphosphate (RuBP) is $ C{{O}_{2}} $ acceptor in $ {{C}_{3}} $ plants. It combines with $ C{{O}_{2}} $ in presence of Rubisco and form an unstable 6- C compound. This compound immediately breaks into two molecules of 3- C, 3- phosphoglyceric acid (PGA), the first stable compound formed in Calvin cycle.
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Concepts Used:

Photosynthesis in Higher Plants

Processes Of Photosynthesis in Higher Plants:

Photosynthesis in higher plants involves the following processes:

  • Light Reaction
  • Dark Reaction

Light Reaction:

  • This phenomenon occurs in the presence of light.
  • The pigment absorbs light and produces energy in the form of ATP.
  • The process involves- absorption of light, water splitting, the release of oxygen, and formation of ATP and NADPH.

Dark Reaction:

This process occurs in the absence of light in the stroma of the chloroplasts. The following cycles are involved in the process:

  1. Calvin Cycle (C3 Cycle)
  2. C4 Cycle (Hatch and Slack Pathway)