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Q. No.Consider the following two statements:
The stromal lamellae membranes in the chloroplast lack
A: Photosystem II
B: NADP reductase enzyme
1. Only A is correct
2. Only B is correct
3. Both A and B are correct.
4. Both A and B are incorrect.
The stromal lamellae membranes in the chloroplast lack
A: Photosystem II
B: NADP reductase enzyme
1. Only A is correct
2. Only B is correct
3. Both A and B are correct.
4. Both A and B are incorrect.
Subtopic: Light Reaction: Photophosphorylation |
81%
From NCERT
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Consider the given two statements:
1. Only I
2. Only II
3. Both I and II are correct
4. Neither I nor II
| I: | Water splitting complex is associated with PSII in photosynthetic plants. |
| II: | Chlorophyll a reaction center in PSII is called as P680 |
2. Only II
3. Both I and II are correct
4. Neither I nor II
Subtopic: Photosystems | Light Reaction: Electron Transport |
92%
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Which of the following replaces the electrons removed from the reaction center chlorophyll-A molecule of the photosystem I in non-cyclic photophosphorylation?
1. The light harvesting complex of PS-I
2. Water
3. PS-II
4. NADPH
Subtopic: Light Reaction: Photophosphorylation |
From NCERT
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Photochemical phase of oxygenic photosynthesis does not include:
1. Light absorption
2. Water splitting
3. Formation of ATP and NADPH
4. Synthesis of sugar
1. Light absorption
2. Water splitting
3. Formation of ATP and NADPH
4. Synthesis of sugar
Subtopic: Light Reaction: Electron Transport |
93%
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Chemiosmosis does not require:
1. a membrane leaky to protons
2. a proton pump
3. a proton gradient
4. ATP synthase
1. a membrane leaky to protons
2. a proton pump
3. a proton gradient
4. ATP synthase
Subtopic: Chemiosmotic hypothesis |
92%
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In order to assimilate one \(\text {CO}_2\) molecule via photosynthesis, the green plants require:
1. 9 ATP and 6 NADPH molecules
2. 5 ATP and 3 NADPH molecules
3. 3 ATP and 2 NADPH molecules
4. 18 ATP and 12 NADPH molecules
1. 9 ATP and 6 NADPH molecules
2. 5 ATP and 3 NADPH molecules
3. 3 ATP and 2 NADPH molecules
4. 18 ATP and 12 NADPH molecules
Subtopic: Dark Reaction : Calvin Cycle |
75%
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Which of the following is not a factor that directly affects the rate of photosynthesis?
1. Concentration of chlorophyll
2. Soil fertility
3. Light intensity
4. Temperature
1. Concentration of chlorophyll
2. Soil fertility
3. Light intensity
4. Temperature
Subtopic: Factors Affecting Photosynthesis |
85%
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The first action spectrum of photosynthesis was described by:
1. T. W. Engelman
2. Julius Sachs
3. Joseph Priestley
4. Jan Ingenhousz
1. T. W. Engelman
2. Julius Sachs
3. Joseph Priestley
4. Jan Ingenhousz
Subtopic: Historical View: Experiments |
90%
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Consider the given two statements.
| Assertion (A): | A plant with C4 pathway has a tremendous advantage over a plant with C3 pathway when the weather is hot and dry. |
| Reason (R): | The stomata remain open and there is always sufficient carbon dioxide to combine directly with RUBP in C4 plants when the weather is hot and dry. |
| 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, (R) is False |
| 4. | (A) is False, (R) is True |
Subtopic: Factors Affecting Photosynthesis |
55%
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Which of the following is a key difference between C3 and C4 plants?
| 1. | C4 plants perform photosynthesis only at night. |
| 2. | C3 plants have a higher water-use efficiency than C4 plants. |
| 3. | C4 plants utilize PEP carboxylase to capture CO₂, resulting in lack of photorespiration. |
| 4. | C3 plants have a mechanism to concentrate CO₂ in bundle sheath cells, unlike C4 plants. |
Subtopic: Question on C4 Pathway |
93%
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