Q. No.How many carbon atoms does the primary carbon dioxide acceptor have in C3 photosynthesis?
1.
2
2.
3
3.
4
4.
5
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How many ATP and NADPH are respectively required to make one molecule of glucose through the Calvin pathway?
| 1. 3 and 2 | 2. 6 and 6 |
| 3. 9 and 6 | 4. 18 and 12 |
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Identify the incorrect statement regarding the comparison of plants to the plants:
1. They tolerate higher temperatures
2. They show a response to high light intensities
3. They have a lower productivity of biomass
4. They lack photorespiration
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The bundle sheath cells are characterized by:
| I: | a large number of chloroplasts present in them |
| II: | thick cell walls impervious to gas exchange |
| III: | large intercellular spaces |
| 1. Only I and II | 2. Only I and III |
| 3. Only II and III | 4. I, II and III |
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The primary acceptor in plants is:
1. RuBP in mesophyll cells
2. RuBP in bundle sheath cells
3. PEP in mesophyll cells
4. PEP in bundle sheath cells
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The pathway:
1. is common to all plants
2. takes place in mesophyll cells in plants
3. takes place in bundle sheath cells in plants
4. does not take place in CAM plants
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In pathway, the 4-carbon compound transported to bundle sheath cells most commonly is:
| 1. | Glutamic acid | 2. | Malic acid |
| 3. | Oxaloacetic acid | 4. | Fumaric acid |
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The 2-carbon compound formed in photorespiration is:
| 1. | Acetyl CoA | 2. | Phosphoglycolate |
| 3. | Acetic acid | 4. | Ethanol |
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Except for plants in shade or in dense forests, light is rarely a limiting factor in nature. This is because:
| 1. | Dark reactions do not depend on light |
| 2. | The rate of photosynthesis can be increased by higher carbon dioxide and lower temperatures even in low light conditions |
| 3. | Light saturation occurs at 10 % of full sunlight |
| 4. | Carbon fixation is independent of enzymes |
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The correct sequence of flow of electrons in the light reaction is
| 1. | PSII, plastoquinone, cytochromes, PS I, ferredoxin |
| 2. | PSI, plastoquinone, cytochromes, PS II, ferredoxin |
| 3. | PSI, ferredoxin, PS II, |
| 4. | PSI, plastoquinone, cytochromes, PS II, ferredoxin |
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