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Q. No.Read the following four statements A, B, C and D and select the right option having both correct statements:
STATEMENTS:
(A)
Z-scheme of light reaction takes place in the presence of PSI only
(B)
Only PSI functional in cyclic photophosphorylation
(C)
Cyclic photophosphorylation results in a synthesis of ATP and NADPH2
(D)
Stroma lamellae lack PSII as well as NADP
Options:
1.
A and B
2.
B and C
3.
C and D
4.
B and D
Subtopic: Light Reaction: Photophosphorylation | Light Reactions |
83%
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AIPMT - 2010
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Read the following four statements A,B,C and D. Select the right option
A. Z scheme of light reaction takes place in the presence of PS I only
B. only PS I is functional in cyclic photophosphorylation
C. cyclic photophosphorylation results into synthesis of ATP and NADPH2
D. stroma lamellae lack PS II as well as NADP
1. A and B
2. B and C
3. C and D
4. B and D
Subtopic: Light Reactions |
88%
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Given below are two statements:
| Assertion (A): | During Calvin cycle, regeneration of RuBP is crucial for uninterrupted cycle. |
| Reason (R): | RuBP in Calvin cycle acts as a CO2 acceptor. |
| 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: Dark Reaction : Calvin Cycle |
77%
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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
Subtopic: Dark Reaction: Biosynthetic Phase | Dark Reaction : Calvin Cycle |
79%
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| 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 |
58%
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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%
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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 |
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Read the following statements with respect to antenna molecules.
a The LHC are made up of hundreds of pigment molecules bound to proteins.
b Water splitting complex is associated with the PS-ll.
1. Only b is correct
2. Both a & b are incorrect
3. Only a is correct
4. Both a & b are correct
Subtopic: Photosystems |
84%
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| Column – I | Column - II | ||
| i. | Jan Ingenhousz | a. | discovery of O2 |
| ii. | Joseph Priestley | b. | Plants restore to the air whatever breathing animals and burning candles remove |
| iii. | T.W Englemann | c. | showed that only the green part of the plants could release oxygen |
| iv. | Julius von Sachs | d. | discovery of production of glucose in plants |
| e. | first action spectrum of photosynthesis | ||
| f. | Using a prism he split light into its spectral components and then illuminated Cladophora, placed in a suspension of aerobic bacteria. |
Which of the following shows the correct match?
| 1. | i-c; ii-b; iii-a, e, f; iv-d |
| 2. | i-a, b; ii-c; iii-d; iv- e, f. |
| 3. | i-a; ii- b; iii- c, e; iv-f. |
| 4. | i-c, ii-a,b; iii-e, f; iv-d; |
Subtopic: Historical View: Experiments |
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| Assertion(A): | Immediately after light becomes unavailable, the biosynthetic process continues for some time, and then stops. |
| Reason(R): | It is misnomer to call a biosynthetic phase a dark reaction. |
Choices for Assertions and reasons:
| 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: Dark Reaction: Biosynthetic Phase |
62%
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