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Q. No.The pathway:
1.
is common to all plants
2.
takes place in mesophyll cells in C4 plants
3.
takes place in bundle sheath cells in C3 plants
4.
does not take place in CAM plants
Subtopic: Dark Reaction : Calvin Cycle |
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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 |
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
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The 2-carbon compound formed in photorespiration is:
| 1. | Acetyl CoA | 2. | Phosphoglycolate |
| 3. | Acetic acid | 4. | Ethanol |
Subtopic: Photorespiration |
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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: Photorespiration |
88%
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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 |
Subtopic: Factors Affecting Photosynthesis |
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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 |
Subtopic: Dark Reaction: Biosynthetic Phase | Dark Reaction : Calvin Cycle |
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The factors that can be limiting for the light independent reactions of photosynthesis are:
| 1. | CO2, temperature, and light |
| 2. | CO2, light, and water |
| 3. | water, temperature, and CO2 |
| 4. | oxygen, water, and temperature |
Subtopic: Factors Affecting Photosynthesis |
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The absorption spectrum in the given diagram will be of:
| 1. | Chlorophyll a | 2. | Chlorophyll b |
| 3. | Carotenoids | 4. | Retinol |
Subtopic: Pigments |
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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 |
Subtopic: Pigments |
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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: Photorespiration |
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