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Q. No.Match each item in Column I with the one in Column II regarding C4 plants and select the correct match from the codes given:
COLUMN I
COLUMN II
A
Primary acceptor of carbon dioxide
P
RuBP
B
Cells in which Calvin cycle takes place
Q
PEP
C
Primary carbon dioxide fixation product
R
Bundle sheath
D
Example
S
Mesophyll
T
PGA
U
OAA
V
Sorghum
W
Wheat
Codes:
A
B
C
D
1.
Q
S
U
V
2.
P
S
T
W
3.
Q
R
U
V
4.
P
R
T
W
Subtopic: C4 Cycle (Hatch & Slack Pathway) | C4 Plants Examples |
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R):
In the light of the above statements choose the correct answer from the options given below:
| Assertion (A): | Cyclic photophosphorylation results in the synthesis of ATP but not of NADPH + H+. |
| Reason (R): | The excited electron does not pass on to NADP+ but is cycled back to the PS I complex through the electron transport chain. |
| 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: Photophosphorylation |
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Given below are two statements:
| Assertion (A): | The reaction centres in both photosystems in plants is the same. |
| Reason (R): | The reaction centres of both photosystems are formed by chlorophyll b molecules. |
| 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 Reactions :1 |
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Consider the two statements:
| I: | The water-splitting complex is located on the inner side of the thylakoid membrane |
| II: | The NADP reductase enzyme is located on the stromal side of the thylakoid membrane |
| 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: Dark Reaction: Biosynthetic Phase |
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From NCERT
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Identify the incorrect statement regarding photosynthetic pigments in higher plants:
| 1. | Chlorophyll a is the chief pigment associated with photosynthesis. |
| 2. | In the chromatogram, carotenoids appear yellow to yellow-orange. |
| 3. | Accessory pigments protect chlorophyll a from photo-oxidation. |
| 4. | The maximum absorption of chlorophyll a is in blue and green wavelength region of light. |
Subtopic: Photosynthetic Pigments |
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Consider the two statements:
| I: | Current availability of carbon dioxide levels is limiting to the C4 plants. |
| II: | C3 plants have a much lower temperature optimum than C4 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: C4 Cycle (Hatch & Slack Pathway) | C4 Plants Examples | Factors Affecting Photosynthesis |
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Match the Scientists given in COLUMN I with their contribution in Column II and select the correct match from the codes given:
Codes
| COLUMN I | COLUMN II | ||
| A | Jan Ingenhousz | P | Provided evidence for production of glucose when plants grow |
| B | T. W Engelmann | Q | Described the first action spectrum for photosynthesis |
| C | Julius von Sachs | R | Showed that sunlight is essential for photosynthesis |
| D | Cornelius van Neil | S | Inferred that oxygen evolved in photosynthesis comes from water and not from carbon dioxide |
| A | B | C | D | |
| 1. | R | Q | P | S |
| 2. | Q | R | S | P |
| 3. | P | S | R | Q |
| 4. | S | P | Q | R |
Subtopic: Introduction | Historical View: Experiments |
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Accessory pigments of photosynthesis in higher plants:
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: | include chlorophyll b, xanthophylls and carotenoids. |
| II: | absorb light and transfer electrons to chlorophyll a. |
| III: | protect chlorophyll a from photo-oxidation. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Pigments |
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Calvin cycle is described under three stages – I: Carboxylation; II: Reduction and III: Regeneration. ATP is required during stage/s:
| 1. | Only I | 2. | Only I and III |
| 3. | Only II and III | 4. | Only IV |
Subtopic: Dark Reaction : Calvin Cycle |
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Identify the incorrect statement regarding photosynthesis in higher plants:
| 1. | Chlorophyll a is the chief pigment associated with photosynthesis. |
| 2. | Splitting of water is associated with PS II |
| 3. | Cyclic flow of electrons results only in the synthesis of NADH |
| 4. | Biosynthetic phase is dependent on the products of the light reaction |
Subtopic: Photosynthetic Pigments |
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