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Q. No.Consider the given two statements:
Assertion (A):
Light is required for the light dependent reactions of photosynthesis.
Reason (R):
Light splits ATP molecules which generate the energy necessary to power the light independent reactions.
1.
(A) is True, (R) is False
2.
Both (A) and (R) are True and (R) correctly explains (A)
3.
Both (A) and (R) are True but (R) does not correctly explain (A)
4.
Both (A) and (R) are False
Subtopic: Light Reaction: Photophosphorylation | Light Reactions :1 | Light Reactions :2 | Light Reactions :3 |
62%
From NCERT
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A first action spectrum of photosynthesis was described by:
| 1. | Joseph Priestley | 2. | Julius von Sachs |
| 3. | Robin Hill | 4. | T. W. Engelmann |
Subtopic: Historical View: Experiments |
95%
From NCERT
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On the chromatogram, which of the following pigments appear yellow green?
| 1. | Chlorophyll a | 2. | Chlorophyll b |
| 3. | Xanthophyll | 4. | Carotenoid |
Subtopic: Pigments |
81%
From NCERT
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How many water molecules need to split in photolysis of water during oxygenic photosynthesis to produce one molecule of oxygen?
| 1. | 1 | 2. | 2 |
| 3. | 3 | 4. | 4 |
Subtopic: Introduction | Photosynthetic Pigments | Photosystems |
80%
From NCERT
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The process through which ATP is synthesised by cells in chloroplast is called:
| 1. | Dark reaction |
| 2. | Substrate level phosphorylation |
| 3. | Oxidative photophosphorylation |
| 4. | Photophosphorylation |
Subtopic: Light Reaction: Photophosphorylation | Light Reactions :1 | Light Reactions :2 | Light Reactions :3 |
67%
From NCERT
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In cyclic flow of electrons:
| 1. | Both ATP and NADPH are produced |
| 2. | Photolysis of water produces oxygen |
| 3. | Excited electron does not pass on to NADP+ but is cycled back to the PS I complex through the electron transport chain |
| 4. | Only PS II is functional |
Subtopic: Photosystems |
89%
From NCERT
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Ribulose bisphosphate (RuBP) is a:
1. aldotriose sugar
2. ketohexose sugar
3. ketopentose sugar
4. aldopentose sugar
1. aldotriose sugar
2. ketohexose sugar
3. ketopentose sugar
4. aldopentose sugar
Subtopic: Dark Reaction : Calvin Cycle | C4 Cycle (Hatch & Slack Pathway) |
72%
From NCERT
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The molecule used to fix carbon dioxide in Calvin cycle is:
| 1. | Acetyl CoA, a 2 carbon molecule |
| 2. | G3P (Glyceraldehyde-3-phosphate), a 3 carbon molecule |
| 3. | RuBP (Ribulose-1,5-bisphosphate), a 5 carbon molecule |
| 4. | Citrate, a 6 carbon molecule |
Subtopic: Dark Reaction : Calvin Cycle |
86%
From NCERT
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During oxygenic photosynthesis in higher plants, in the light reactions, the source of replacement electrons
for Photosystem II is:
1. Glucose
2. Water
3. NADPH
4. Photosystem I
for Photosystem II is:
1. Glucose
2. Water
3. NADPH
4. Photosystem I
Subtopic: Light Reaction: Electron Transport |
87%
From NCERT
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Photosynthesis is carried out by green plants most effectively in what wavelength range of light?
| 1. | Green | 2. | Infrared |
| 3. | Blue and red | 4. | Ultraviolet |
Subtopic: Photosynthetic Pigments |
94%
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