Q. No.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
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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The reactions of the Calvin cycle can take place as long as which of the following products of the light dependent reactions are available?
| 1. | Water and Glucose | 2. | Water and ATP |
| 3. | Oxygen and Carbon dioxide | 4. | ATP and NADPH |
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The factors that can be limiting for the light independent reactions of photosynthesis are:
1. , temperature, and light
2. , light, and water
3. water, temperature, and
4. oxygen, water, and temperature
The wavelengths of light most useful in photosynthesis are:
| 1. | green and orange | 2. | red and blue |
| 3. | infrared and yellow | 4. | red and green |
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Oxygen, during oxygenic photosynthesis, is produced during:
1. cyclic photophosphorylation
2. the light-dependent reactions involving photosystems I and II
3. Calvin cycle
4. the Krebs cycle
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