Question:

Which light range is least effective in photosynthesis?

Updated On: Jul 7, 2022
  • Blue
  • Green
  • Red
  • Violet
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The Correct Option is B

Solution and Explanation

Blue and red regions of the light spectrum are most effective in photosynthesis. Blue wavelengths of light carry more energy while red wavelengths have lesser energy. Therefore, the most efficient wavelengths of light efffective in photosynthesis are those of red light. Green light is least effective in photosynthesis.
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Notes on Photosynthesis in higher plants

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)