Question:
Photorespiration is a wasteful process where there is no synthesis of ATP energy.
RuBisCO is present in mesophyll cells of C plants hence they show more productivity.
Photorespiration is a wasteful process where there is no synthesis of ATP energy.
RuBisCO is present in mesophyll cells of C plants hence they show more productivity.
Updated On: Jul 28, 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 C
Solution and Explanation
Photorespiration does not produce energy or reducing power. Rather it consumes energy. In C plants, photorespiration, does not occur. Here, RuBisCO is located only in bundle sheath cells where photosynthetic release of oxygen does not occur. Bundle sheath cells have a high intracellular concentration of CO due to flow of C acids and their decarboxylation to release CO. Therefore, RuBisCO functions purely as carboxylase in C plants. They show high productivity and hence higher yield.
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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:
- Calvin Cycle (C3 Cycle)
- C4 Cycle (Hatch and Slack Pathway)