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Q. No.Subtopic: C4 Cycle (Hatch & Slack Pathway) |
91%
From NCERT
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Regarding the temperature optimum for photosynthesis of different plants:
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: | Tropical plants have a lower temperature optimum than the plants adapted to temperate climates. |
| II: | The C4 plants respond to higher temperatures and show higher rate of photosynthesis while C3 plants have a much lower temperature optimum. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Factors Affecting Photosynthesis |
72%
From NCERT
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In the ‘Regeneration’ stage of the Calvin cycle:
| 1. | Five G3P molecules produce three RuBP molecules, using up three molecules of ATP. |
| 2. | Three G3P molecules produce five RuBP molecules, using up three molecules of ATP. |
| 3. | Three G3P molecules produce five RuBP molecules, using up five molecules of ATP. |
| 4. | Five G3P molecules produce three RuBP molecules, using up five molecules of ATP. |
Subtopic: Dark Reaction : Calvin Cycle |
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C4 carbon fixation, one of three known photosynthetic processes of carbon fixation in plants, is also called as:
1. Calvin Benson cycle
2. Tricarboxylic acid cycle
3. Hatch–Slack pathway
4. Embden-Meyerhof-Parnas pathway
1. Calvin Benson cycle
2. Tricarboxylic acid cycle
3. Hatch–Slack pathway
4. Embden-Meyerhof-Parnas pathway
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
92%
From NCERT
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RuBisCO:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | is the most abundant enzyme in the world |
| II: | is characterised by the fact that its active site can bind to both CO2 and O2 |
| III: | has a much greater affinity for CO2 when the CO2: O2 is nearly equal |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Photorespiration |
88%
From NCERT
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Identify the correct statements:
| I: | Only green plants can prepare their own food. |
| II: | In green plants, all cells, tissues and organs photosynthesise. |
| 1. | Only I |
| 2. | Only II |
| 3. | Both I and II |
| 4. | Neither I nor II |
Subtopic: Introduction | Historical View: Experiments | Pigments |
From NCERT
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The colour/s of visible light that work/s least well for photosynthesis is/are:
1. Red and Blue
2. Violet and Yellow
3. Green
4. Yellow
1. Red and Blue
2. Violet and Yellow
3. Green
4. Yellow
Subtopic: Pigments |
From NCERT
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A part of a leaf is enclosed in a test tube containing some KOH soaked cotton, while the other half is exposed to air. The setup is then placed in light for some time. Later, the exposed part of the leaf tested positive for starch, while the portion that was in the tube, tested negative. This showed that:
| I: | CO2 was required for photosynthesis |
| II: | Light is not essential for carbon fixation in photosynthesis. |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: Introduction | Historical View: Experiments |
89%
From NCERT
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Consider the given two statements:
| Assertion: | The alignment of the chloroplasts along the walls of the mesophyll cells vary depending on the amount of incident light. |
| Reason: | The alignment of the chloroplasts along the walls of the mesophyll cells is such that they get the optimum quantity of the incident light. |
| 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 |
91%
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There is a clear division of labour within the chloroplast where:
| I: | the membrane system is responsible for trapping the light energy and for the synthesis of ATP and NADPH. |
| II: | in stroma, enzymatic reactions synthesise sugar, which in turn forms starch and synthesis of ATP but not NADPH takes place. |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: Chloroplast Structure |
65%
From NCERT
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