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Q. No.The NADP reductase enzyme:
I:
is located on the stroma side of thylakoid membrane
II:
is the last enzyme in the transfer of electrons during photosynthesis from PS I to NADPH
1.
Both I and II are correct
2.
Both I and II are incorrect
3.
I is correct
4.
II is correct
Subtopic: Dark Reaction : Calvin Cycle |
85%
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Consider the given two statements
| I: | When the intensity of sunshine is minimum, the chloroplasts in a mesophyll cell align themseleve parallel to wall of mesophyll cells. |
| II: | Thylakoids are membrane-bound compartments inside chloroplasts and cynobacteria. |
| 1. | Both I and II are correct |
| 2. | Both I and II are incorrect |
| 3. | I is correct |
| 4. | II is correct |
Subtopic: Chloroplast Structure |
71%
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Consider the given two statements:
| Assertion (A): | Green house crops such as tomatoes & bell pepper are allowed to grow in \(CO_2\) enriched atmosphere. This leads to higher yields |
| Reason (R): | Tomato and Bell pepper are \(C_4\) plants |
| 1. | Both (A) and (R) are True, and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True, but (R) is not the correct explanation of (A). |
| 3. | (A) is True, but (R) is False. |
| 4. | (A) is False, but (R) is True. |
Subtopic: Factors Affecting Photosynthesis |
76%
From NCERT
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In Kranz anatomy, bundle sheath cells are characterized by:
| I: | presence of large number of chloroplasts |
| II: | thin wall, highly permeable to gas exchange |
| III: | no intercellular spaces |
| 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 |
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
91%
From NCERT
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Stroma lamellae in chloroplasts lack
| I: | PS I |
| II: | NADP reductase |
| 1. | I and II are correct |
| 2. | I and II are incorrect |
| 3. | Only I is correct |
| 4. | Only II is correct |
Subtopic: Light Reaction: Photophosphorylation |
80%
From NCERT
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Consider the given two statements:
| Assertion (A): | Photosynthesis is vital for climate process |
| Reason (R): | Photosynthesis captures carbon dioxide from the air |
| 1. | Both (A) and (R) are True, and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True, but (R) is not the correct explanation of (A). |
| 3. | (A) is True, but (R) is False. |
| 4. | (A) is False, but (R) is True. |
Subtopic: Introduction |
92%
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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 enzyme catalyzed |
| 1. | Both (A) and (R) are True, and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True, but (R) is not the correct explanation of (A). |
| 3. | (A) is True, but (R) is False. |
| 4. | (A) is False, but (R) is True. |
Subtopic: Factors Affecting Photosynthesis |
71%
From NCERT
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How does PEPcase differ from RuBisCO in function?
| 1. | PEPcase is more efficient at carbon fixation at low CO₂ concentrations than RuBisCO. |
| 2. | PEPcase fixes oxygen instead of carbon dioxide, unlike RuBisCO. |
| 3. | PEPcase catalyzes the dark reactions, while RuBisCO catalyzes the light reactions. |
| 4. | RuBisCO requires a higher pH to function optimally compared to PEPcase. |
Subtopic: CAM Pathway |
87%
From NCERT
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How many of the given statements are true?
1. 3
2. 4
3. 5
4. 6
| I: | C3 plants use the Calvin cycle to fix carbon dioxide directly into a three-carbon compound, 3-phosphoglycerate. |
| II: | C4 plants conduct their light-dependent reactions and Calvin cycle in the same cell type. |
| III: | Photosystem I primarily functions to generate ATP, while Photosystem II primarily functions to generate NADPH. |
| IV: | C4 plants separate carbon fixation and the Calvin cycle into two different types of cells to reduce photorespiration. |
| V: | Light-dependent reactions occur in the thylakoid membranes and involve the absorption of light to produce ATP and NADPH. |
| VI: | In C3 plants, photorespiration is promoted by high concentrations of oxygen, especially under high light intensity and temperature conditions. |
1. 3
2. 4
3. 5
4. 6
Subtopic: Questions on Calvin Cycle | Question on C4 Pathway | Questions on Photorespiration |
52%
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Consider the given two statements:
| Assertion (A): | Chlorophyll a is the primary pigment involved in photosynthesis. |
| Reason (R): | Chlorophyll a initiates the conversion of solar energy to chemical energy. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Chloroplast Structure |
77%
From NCERT
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