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Q. No.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 |
78%
Level 2: 60%+
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In the 1930s, van Neil correctly hypothesized that oxygen released in photosynthesis by green plants comes from:
| 1. | Carbon dioxide | 2. | Water |
| 3. | Glucose | 4. | Atmospheric oxygen |
Subtopic: Historical View: Experiments |
90%
Level 1: 80%+
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In the chloroplast:
| Statement I: | The membrane system is the site of enzymatic reactions leading to synthesis of sugar. |
| Statement II: | The stroma is responsible for trapping the light energy and also for the synthesis of ATP and NADPH. |
| 1. | Both Statement I and Statement II are correct |
| 2. | Both Statement I and Statement II are incorrect |
| 3. | Statement I is correct but Statement II is incorrect |
| 4. | Statement I is incorrect but Statement II is correct |
Subtopic: Chloroplast Structure |
61%
Level 2: 60%+
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Photosynthesis takes place in:
| 1. | animals only |
| 2. | plants only |
| 3. | plants, algae, some bacteria, some protists |
| 4. | only plants and animals |
Subtopic: Historical View: Experiments | Redtrop Experiment | Emerson's Enhancement Experiment |
92%
Level 1: 80%+
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Identify the correctly matched pairs:
| I: | chloroplast--double membrane organelle |
| II: | mitochondrion--double membrane organelle |
| III: | matrix of mitochondrion--location of glycolysis |
| IV: | cristae of mitochondrion--location of the electron transport system |
| 1. | Only I and II | 2. | Only I, II and IV |
| 3. | Only II, III and IV | 4. | I, II, III and IV |
Subtopic: Photosystems |
52%
Level 3: 35%-60%
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How many carbon atoms does the primary carbon dioxide acceptor have in C3 photosynthesis?
| 1. | 2 | 2. | 3 |
| 3. | 4 | 4. | 5 |
Subtopic: Dark Reaction : Calvin Cycle |
78%
Level 2: 60%+
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Though chlorophyll a is the major pigment responsible for trapping light, other thylakoid pigments called accessory pigments are also involved. The accessory pigments:
| I: | Include xanthophylls and carotenoids but not chlorophyll b |
| II: | Absorb light and transfer electrons to chlorophyll a |
| III: | Enable a wider range of wavelength of incoming light to be reflected by green leaves |
| IV: | Make Chlorophyll a more prone to photo-oxidation |
The incorrect statements include:
| 1. | Only I and II | 2. | Only III and IV |
| 3. | Only I, III and IV | 4. | I, II, III and IV |
Subtopic: Photosynthetic Pigments |
Level 4: Below 35%
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A C3 plant is provided CO2 labelled with a radioactive isotope. In the chloroplast, during the process of photosynthesis, the radioactivity is expected to appear first in:
1. RuBP
2. PEP
3. OAA
4. PGA
1. RuBP
2. PEP
3. OAA
4. PGA
Subtopic: Photorespiration |
70%
Level 2: 60%+
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‘The effect of water as a factor affecting photosynthesis is more through its effect on the plant, rather than directly on photosynthesis’. Which of the following support this statement?
| I: | Water stress causes the stomata to close, hence reducing the CO2 availability. |
| II: | Water stress also makes leaves wilt, thus, increasing the surface area of the leaves and their metabolic activity as well. |
| 1. | Only I |
| 2. | Only II |
| 3. | Both I and II |
| 4. | Neither I nor II |
Subtopic: Factors Affecting Photosynthesis |
70%
Level 2: 60%+
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Study the pathway given below-
In which of the following options, correct words for all the three blanks A, B and C are indicated?
| A | B | C | |
| 1. | Fixation | Transamination | Regeneration |
| 2. | Fixation | Decarboxylation | Regeneration |
| 3. | Carboxylation | Decarboxylation | Reduction |
| 4. | Decarboxylation | Reduction | Regeneration |
83%
Level 1: 80%+
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