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Q. No.Which wavelength of the visible spectrum of sunlight carries maximum energy?
1.
Violet/Blue
2.
Green
3.
Yellow
4.
Red
Subtopic: Pigments |
73%
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NADPH and ATP:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | are the products of the light dependent reactions of photosynthesis. |
| II: | are used in the light independent reactions of photosynthesis. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: WHERE ARE THE ATP AND NADPH USED |
79%
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The bundle sheath cells in Kranz anatomy arrangement:
| 1. | may form several layers around the vascular bundles |
| 2. | are characterised by having only a few number of chloroplasts |
| 3. | have thin walls freely permeable to gaseous exchange |
| 4. | have large intercellular spaces. |
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
86%
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In C4 plants, the four carbon compounds like oxalic acid and malic acid:
| 1. | are formed in mesophyll cells and transported to bundle sheath cells |
| 2. | are formed in bundle sheath cells and transported to mesophyll cells |
| 3. | are formed in mesophyll cells, get decarboxylated in mesophyll cells and the resultant three carbon molecule is transported to bundle sheath cells. |
| 4. | are formed in bundle sheath cells and get decarboxylated in mesophyll cells |
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
74%
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In photorespiration, RuBisCO:
1. adds carbon dioxide to RuBP
2. gets denatured
3. adds oxygen to RuBP
4. acquires a very high affinity for carbon dioxide
1. adds carbon dioxide to RuBP
2. gets denatured
3. adds oxygen to RuBP
4. acquires a very high affinity for carbon dioxide
Subtopic: Photorespiration |
72%
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Both ATP and NADPH are required in the Calvin cycle during:
1. carbon dioxide fixation
2. carbon dioxide reduction
3. regeneration of RuBP
4. cyclic electron pathway
1. carbon dioxide fixation
2. carbon dioxide reduction
3. regeneration of RuBP
4. cyclic electron pathway
Subtopic: Dark Reaction : Calvin Cycle |
65%
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Consider the given two statements:
| Assertion(A): | The dark reactions of photosynthesis are temperature controlled. |
| Reason (R): | The dark reactions of photosynthesis are enzymatic. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Factors Affecting Photosynthesis |
75%
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Consider the given two statements:
| Assertion (A): | The effect of water as a factor is more indirect rather than direct on photosynthesis. |
| Reason (R): | Water is one of the reactants in the light reaction. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Factors Affecting Photosynthesis |
61%
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Consider the given two statements:
| Statement I: | At low light conditions, both C3 and C4 plants respond to high CO2 conditions. |
| Statement II: | At high light intensities, both C3 and C4 plants show increase in the rates of photosynthesis. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Factors Affecting Photosynthesis |
53%
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The correct chronological sequence of protein complexes in the thylakoid membrane
involved in light reactions is:
involved in light reactions is:
| 1. | Photosystem II (PS II), Cytochrome b6f complex, Photosystem I (PS I), and ATP synthase. |
| 2. | Photosystem I (PS I), Cytochrome b6f complex, Photosystem II (PS II), and ATP synthase. |
| 3. | Photosystem II (PS II), Photosystem I (PS I), Cytochrome b6f complex, and ATP synthase. |
| 4. | Photosystem I (PS I), Photosystem II (PS II), Cytochrome b6f complex, and ATP synthase. |
Subtopic: Light Reaction: Electron Transport |
87%
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