- 1(current)
Q. No.The 2-carbon compound formed in photorespiration is:
| 1. | Acetyl CoA | 2. | Phosphoglycolate |
| 3. | Acetic acid | 4. | Ethanol |
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I. there is no synthesis of sugars
II. there is release of carbon dioxide with the utilization of ATP
III. ATP is synthesized but NADPH is not synthesized
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
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| a. | They have a special type of leaf anatomy |
| b. | They tolerate higher temperature |
| c. | They show a response to high light intensities |
| d. | They lack a process called photorespiration |
| e. | They have greater productivity of biomass |
| 1. | All except [e] |
| 2. | [b], [c] and [d] only |
| 3. | All |
| 4. | [a], [b], [d] and [e] only |
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Photorespiration is a wasteful process. Why is it so?
1. The number of ATP molecules produced in the pathway is very low.
2. The number of NADPH molecules produced in the pathway is very low.
3. The synthesis of sugars in the pathway requires a large input of ATP energy.
4. There is neither synthesis of sugars, nor of ATP in the pathway.
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The greatest problem with photorespiration is faced by:
| 1. | C4 plants | 2. | C3 plants |
| 3. | CAM plants | 4. | purple sulfur bacteria |
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The process of photosynthesis has lower efficiency if photorespiration occurs because of the reduced formation of:
| 1. | AcetylCoA | 2. | 3-phosphoglycerate |
| 3. | ATP | 4. | RuBP |
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1. has no affinity for oxygen
2. has a much greater affinity for carbon dioxide
3. has a much greater affinity for oxygen
4. has equal affinity for both carbon dioxide and oxygen
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In the diagram showing relation between Calvin cycle and Photorespiration the molecule labeled X can be:
| 1. Oxygen 2. Ammonia 3. Nitric oxide 4. Hydrogen sulfide |
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- 1(current)
Q. No.
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