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Q. No.Given below are two statements:
Assertion (A):
Six molecules of CO2 and twelve molecules of NADPH + H+ and 18 ATP are used to form one hexose molecules.
Reason (R):
Light reaction results in formation of ATP and NADPH2.
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.
Both (A) and (R) are false.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Subtopic: Dark Reaction: Biosynthetic Phase | Dark Reaction : Calvin Cycle |
79%
Level 2: 60%+
Hints
| Assertion(A): | Peroxisomes participate in photorespiration in C4 plants. |
| Reason(R): | Catalase enzyme is present in high concentration in peroxisomes |
In the following questions a statement of assertion (A) is followed by a statement of reason (R).
| 1. | Both (A) & (R) are true and (R) is the correct explanation of (A) |
| 2. | Both (A) & (R) are true but (R) is not the correct explanation of (A) |
| 3. | (A) is true statement but (R) is false |
| 4. | Both (A) and (R) are false statements |
Subtopic: Questions on Photorespiration |
59%
Level 3: 35%-60%
Hints
Given below are two statements:
| Assertion (A): | For evolution of O2 in photosynthesis, PS-II is required. |
| Reason (R): | PS II is reduced by pulling electrons from water due to which photolysis of H2O occurs. |
| 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. | Both (A) and (R) are false. |
Subtopic: Light Reaction: Electron Transport | Light Reactions :1 |
81%
Level 1: 80%+
Hints
A protein that spans the phospholipid bilayer one or more times is
1. a transmembrane protein.
2. an integral protein.
3. a peripheral protein.
4. an integrin.
1. a transmembrane protein.
2. an integral protein.
3. a peripheral protein.
4. an integrin.
Subtopic: Chemiosmotic hypothesis |
60%
Level 2: 60%+
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Hints
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Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to survive. The best way to detect the lack of photosystem II in these organisms would be
| 1. | to determine if they have thylakoids in the chloroplasts. |
| 2. | to test for liberation of O2 in the light. |
| 3. | to test for CO2 fixation in the dark. |
| 4. | to do experiments to generate an action spectrum. |
Subtopic: Light Reactions |
71%
Level 2: 60%+
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Hints
Consider the following main reactions in the tricarboxylic acid cycle and arrange them in order:
Choose the correct one from the options given below:
| A. | Condensation |
| B. | Dehydrogenation |
| C. | Isomerization |
| D. | Oxidative decarboxylation |
| E. | Substate-level phosphorylation |
Choose the correct one from the options given below:
| 1. | A > C > D > E > B |
| 2. | A > B > C > D > E |
| 3. | C > A > B > E > D |
| 4. | A > D > E > C > B |
Subtopic: Dark Reaction : Calvin Cycle |
54%
Level 3: 35%-60%
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Hints
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Given below are two statements
In light of the above statements, choose the most appropriate answer from the options given below
| Statement I: | In photosynthesis, the membrane system is responsible for the synthesis of ATP and NADH in carbon reaction |
| Statement II: | In photosynthesis, enzymatic reactions synthesize sugar and which in turn form starch. These reactions are driven by light |
| 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: Light Reaction: Electron Transport |
Level 3: 35%-60%
Hints
Kranz anatomy is a characteristic feature of
1. Glycine max
2. Volvox aureus
3. Amaranthus viridis
4. Aspergillus niger
1. Glycine max
2. Volvox aureus
3. Amaranthus viridis
4. Aspergillus niger
Subtopic: C4 Cycle (Hatch & Slack Pathway) | C4 Plants Examples |
62%
Level 2: 60%+
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Important differences between C3 and C4 plants are
Choose the correct answer from the options given below
| A. | Kranz anatomy |
| B. | Electron Transport System |
| C. | Dimorphic chloroplasts |
| D. | Cyclic photophosphorylation |
| E. | Light reaction |
Choose the correct answer from the options given below
| 1. | A and B only |
| 2. | A and C only |
| 3. | A and D only |
| 4. | A and E only |
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
70%
Level 2: 60%+
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Hints
Please attempt this question first.
Photosynthesis is important because:
| I: | It is the primary source of all food on earth. |
| II: | It is responsible for the release of oxygen into the atmosphere by green plants. |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: Factors Affecting Photosynthesis |
94%
Level 1: 80%+
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