Question:
Cyclic-photophosphorylation results in the formation of
Cyclic-photophosphorylation results in the formation of
Updated On: Jun 6, 2022
- NADPH + H$^+$
- ATP and NADPH + H$^+$
- ADP
- ATP
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The Correct Option is D
Solution and Explanation
In cyclic photophosphorylation, only $PS-I$ takes part and the electrons released from the reaction centre $P_{700}$ return to it after passing through series of carrier. It takes place in stromal lamellae o f the chloroplast which lack $PS II$ and $NADP$ reductase enzyme. The excited electron does not pass on to $NADP^{+}$ but is cycled back to the $PS I$ complex through electron transport chain. Hence, through the cyclic flow only the synthesis o f $ATP$ takes place
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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)