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Q. No.Match List I with List II
List I
Enzyme
List II
A.
RuBISco
I.
Reduces molecular oxygen to form water
B.
PEPCase
II.
Catalyzes the phosphorylation of glucose
C.
Cytochrome C oxidase
III.
beta‐carboxylation of phosphoenolpyruvate
D.
Hexokinase
IV.
Captures atmospheric CO2
Choose the correct answer from the options given below:
1. A ‐ IV , B ‐ III , C ‐ II , D ‐ I
2. A ‐ III , B ‐ II , C ‐ I , D ‐ IV
3. A ‐ IV, B ‐ III , C ‐ I , D ‐ II
4. A ‐ IV , B ‐ II , C ‐ I , D ‐ III
Enzyme
Subtopic: Dark Reaction : Calvin Cycle | C4 Cycle (Hatch & Slack Pathway) | C4 Plants Examples |
58%
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PEP is primary \(CO_2\) acceptor in
1. \(CO_4\) plants
2. \(CO_3\) plants
3. \(CO_2\) plants
4. Both \(CO_3\) and \(CO_4\) plants
1. \(CO_4\) plants
2. \(CO_3\) plants
3. \(CO_2\) plants
4. Both \(CO_3\) and \(CO_4\) plants
Subtopic: Dark Reaction : Calvin Cycle | C4 Cycle (Hatch & Slack Pathway) | C4 Plants Examples |
79%
From NCERT
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Photorespiration
Choose the correct answer from the options given below:
1. A and C only
2. C and D only
3. B and C only
4. A and B only
| A. | In C‐3 plants some Oxygen binds to RuBisCO |
| B. | A specialized kind of leaf anatomy (Kranz Anatomy) is seen in plants exhibiting Photorespiration |
| C. | Involves the activities of chloroplast, mitochondria and peroxisomes |
| D. | It was traced by the work of Calvin and his co‐workers |
1. A and C only
2. C and D only
3. B and C only
4. A and B only
Subtopic: Photorespiration |
71%
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Identify the correct statements:
| I: | Only green plants can prepare their own food. |
| II: | In green plants, all cells, tissues and organs photosynthesise. |
| 1. | Only I |
| 2. | Only II |
| 3. | Both I and II |
| 4. | Neither I nor II |
Subtopic: Introduction | Historical View: Experiments | Pigments |
From NCERT
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Subtopic: C4 Cycle (Hatch & Slack Pathway) |
64%
From NCERT
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Consider the given two statements:
| Assertion (A): | Plants that do not use PEP-carboxylase in carbon fixation are called C3 plants. |
| Reason (R): | The primary carboxylation reaction in C3 plants, catalyzed by RuBisCO, produces the three-carbon 3-phosphoglyceric acids directly in the Calvin-Benson cycle. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True and (R) explains (A) |
| 3. | Both (A) and (R) are True but (R) does not explain (A) |
| 4. | (A) is False but (R) is True |
Subtopic: Dark Reaction : Calvin Cycle | C4 Cycle (Hatch & Slack Pathway) |
From NCERT
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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?
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| 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%
From NCERT
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Consider the two statements:
| Assertion (A): | Current availability of CO2 levels is limiting to the C3 plants. |
| Reason (R): | Carbon dioxide is the major limiting factor for photosynthesis. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True and (R) explains (A) |
| 3. | Both (A) and (R) are True but (R) does not explain (A) |
| 4. | (A) is False but (R) is True |
Subtopic: Factors Affecting Photosynthesis |
56%
From NCERT
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Consider the two statements:
| Assertion (A): | Except for plants in shade or in dense forests, light is rarely a limiting factor for photosynthesis in nature. |
| Reason (R): | Increase in incident light beyond a point causes the breakdown of chlorophyll and a decrease in photosynthesis. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True and (R) explains (A) |
| 3. | Both (A) and (R) are True but (R) does not explain (A) |
| 4. | (A) is False but (R) is True |
Subtopic: Factors Affecting Photosynthesis |
71%
From NCERT
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RuBisCO:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | is the most abundant enzyme in the world |
| II: | is characterised by the fact that its active site can bind to both CO2 and O2 |
| III: | has a much greater affinity for CO2 when the CO2: O2 is nearly equal |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Photorespiration |
88%
From NCERT
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