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Q. No.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 |
80%
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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%
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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.
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%
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Consider the following main reactions in the tricarboxylic acid cycle and arrange them in order:
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
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 |
53%
From NCERT
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Given below are two statements
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
In light of the above statements, choose the most appropriate answer from the options given below
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
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
In light of the above statements, choose the most appropriate answer from the options given below
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 |
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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 |
61%
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Identify the sequence of steps followed in linear electron flow during light reaction of photosynthesis
A. Photoexcitation of P700 and transfer of an electron to NADP+ via ferredoxin
B. Photolysis of H2O
C. Chemiosmosis and generation of ATP
D. Photoexcitation of P680 and release of an electron.
E. Electron transport to plastocyanin from plastoquinone via cytochrome complex
Choose the correct answer from the options given below
1. E, D, C, B, A
2. B, D, C, A, E
3. D, B, E, C, A
4. A, B, C, D, E
A. Photoexcitation of P700 and transfer of an electron to NADP+ via ferredoxin
B. Photolysis of H2O
C. Chemiosmosis and generation of ATP
D. Photoexcitation of P680 and release of an electron.
E. Electron transport to plastocyanin from plastoquinone via cytochrome complex
Choose the correct answer from the options given below
1. E, D, C, B, A
2. B, D, C, A, E
3. D, B, E, C, A
4. A, B, C, D, E
Subtopic: Light Reaction: Electron Transport | Light Reactions :1 |
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Important differences between C3 and C4 plants are
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
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%
From NCERT
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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 |
93%
From NCERT
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The hypothesis “Plants restore to the air whatever breathing animals and burning candles remove” was given, after his experiments, by:
| 1. | Joseph Priestley | 2. | Jan Ingenhousz |
| 3. | Julius von Sachs | 4. | C. B. Van Neil |
Subtopic: Historical View: Experiments |
91%
From NCERT
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