- 1(current)
Q. No.The 2-carbon compound formed in photorespiration is:
| 1. | Acetyl CoA | 2. | Phosphoglycolate |
| 3. | Acetic acid | 4. | Ethanol |
Subtopic: Â Photorespiration |
 84%
From NCERT
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In the photorespiratory pathway:
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
| 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
Subtopic: Â Photorespiration |
 79%
From NCERT
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C4 plants are special. Which of the following will be true for C4 plants?
| 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 |
Subtopic: Â C4 Cycle (Hatch & Slack Pathway) |Â Photorespiration |
 78%
From NCERT
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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. |
Subtopic: Â Photorespiration |
 87%
From NCERT
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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 |
Subtopic: Â Photorespiration |
 81%
From NCERT
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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 |
Subtopic: Â Photorespiration |
 62%
From NCERT
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When the ratio, CO2 : O2 is nearly equal, RuBisCO:
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
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
Subtopic: Â Photorespiration |
 78%
From NCERT
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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 |
 |
Subtopic: Â Dark Reaction : Calvin Cycle |Â Photorespiration |
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