Question:

Photorespiration is a wasteful process. In photorespiratory pathway, there is no synthesis of sugars or$ ATP$.

Updated On: Jul 6, 2022
  • If both assertion and reason are true and reason is the correct explanation of assertion
  • If both assertion and reason are true but reason is not the correct explanation of assertion
  • If assertion is true but reason is false
  • If both assertion and reason are false
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The Correct Option is A

Solution and Explanation

Photorespiration is the light dependent process of oxygenation of ribulose biphosphate $(RuBP)$ and release of carbon dioxide by the photosynthetic organs of a plant. In the photorespiratory pathway, there is neither synthesis of sugars nor of $ATP$. Rather, it results in the release of $CO_{2}$ with the utilisation of $ATP$. Therefore, photorespiration is a wasteful process.
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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)