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Q. No.The products of light reaction of photosynthesis include all the following except:
1. ATP
2. NADPH
3. Glucose
4. O2
Subtopic: WHERE ARE THE ATP AND NADPH USED |
87%
From NCERT
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In C4 plants:
| Statement I: | CO2 is initially incorporated into a four-carbon organic acid (either malate or aspartate) in the mesophyll cells. |
| Statement II: | The chloroplasts of the bundle sheath cells convert this CO2 into carbohydrates by the conventional C3 pathway. |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is incorrect; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is correct; Statement II is correct |
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
68%
From NCERT
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Consider the two statements:
| Assertion (A): | Current availability of CO2 levels is limiting to the C3 plants. |
| Reason (R): | Carbon dioxide is the major limiting factor for photosynthesis. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True and (R) explains (A) |
| 3. | Both (A) and (R) are True but (R) does not explain (A) |
| 4. | (A) is False but (R) is True |
Subtopic: Factors Affecting Photosynthesis |
54%
From NCERT
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Consider the given two statements:
| Assertion (A): | Water molecules appear on both sides of the equation of photosynthesis. |
| Reason (R): | The molecules that enter the reaction are not the same molecules that emerge from the 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: Light Reaction: Photophosphorylation | Light Reactions :1 | Light Reactions :2 | Light Reactions :3 |
From NCERT
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In non-cyclic photophosphorylation, the ultimate acceptor of electrons is:
| 1. | Oxygen | 2. | NADP+ |
| 3. | Water | 4. | G3P |
Subtopic: Photosynthetic Pigments | Light Reaction: Photophosphorylation | Light Reactions :1 | Light Reactions :2 | Light Reactions :3 |
80%
From NCERT
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Who provided evidence for production of glucose when plants grow and that the glucose is usually stored as starch in plants?
1. Arnon and his team
2. F. F. Blackmann
3. Julius von Sachs
4. Jan Ingenhousz
1. Arnon and his team
2. F. F. Blackmann
3. Julius von Sachs
4. Jan Ingenhousz
Subtopic: Historical View: Experiments |
93%
From NCERT
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Consider the given two statements:
| Assertion (A): | Accessory photosynthetic pigments in higher plants enable a wider range of wavelength of incoming light to be utilised for photosynthesis. |
| Reason (R): | Accessory pigments protect chlorophyll a from photo-oxidation. |
| 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: Photosynthetic Pigments |
71%
From NCERT
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Consider the given two statements:
| Assertion (A): | Electron transport via cytochrome b6f is responsible for creating the proton gradient that drives the synthesis of ATP in chloroplasts. |
| Reason (R): | Cytochrome b6f complex functions to mediate the transfer of electrons and of energy between Photosystem II and Photosystem I, while transferring protons from the chloroplast stroma across the thylakoid membrane into the lumen. |
| 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: Chemiosmotic hypothesis |
71%
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Consider the given two statements:
| Assertion (A): | Immediately after light becomes unavailable, the biosynthetic process continues for some time, and then stops. |
| Reason (R): | The biosynthetic phase of photosynthesis depends on the products of 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: Light Reaction: Photophosphorylation | Factors Affecting Photosynthesis | Light Reactions :1 | Light Reactions :2 | Light Reactions :3 |
90%
From NCERT
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Which of the following photosynthetic plants use Calvin pathway for synthesis of sugar?
| I: | C3 plants |
| II: | C4 plants |
| III: | CAM plants |
| 1. | Only I and II |
| 2. | Only I and III |
| 3. | Only II and III |
| 4. | I, II and III |
Subtopic: Dark Reaction : Calvin Cycle |
78%
From NCERT
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