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Q. No.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 |
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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%
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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%
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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%
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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%
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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%
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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%
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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%
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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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Consider the two statements:
| Statement I: | In the photorespiratory pathway, there is synthesis of sugars, but not of ATP. |
| Statement II: | Photorespiratory pathway results in the release of CO2 with the utilization of ATP. |
| 1. | Statement I is correct; Statement II is correct |
| 2. | Statement I is incorrect; Statement II is correct |
| 3. | Statement I is correct; Statement II is incorrect |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Photorespiration |
62%
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