In the chloroplast:
Statement I:
The membrane system is the site of enzymatic reactions leading to synthesis of sugar.
Statement II:
The stroma is responsible for trapping the light energy and also for the synthesis of ATP and NADPH.
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: Chloroplast Structure |
62%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
Consider the given two statements:
I: Carbon reactions during photosynthesis in higher plants are called as dark reactions.
II: They occur in darkness and they are not light-dependent.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
I: Carbon reactions during photosynthesis in higher plants are called as dark reactions.
II: They occur in darkness and they are not light-dependent.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
Subtopic: Dark Reaction: Biosynthetic Phase | Dark Reaction : Calvin Cycle |
79%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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The accessory pigments of photosynthesis:
I. include Carotenoids and Xanthophylls but not Chlorophyll b.
II. enable a wider range of wavelength of incoming light to be utilised for photosynthesis.
III. protect Chlorophyll a from photo-oxidation.
1. Only I and II are correct
2. Only I and III are correct
3. I, II and III are correct
4. Only II and III are correct
I. include Carotenoids and Xanthophylls but not Chlorophyll b.
II. enable a wider range of wavelength of incoming light to be utilised for photosynthesis.
III. protect Chlorophyll a from photo-oxidation.
1. Only I and II are correct
2. Only I and III are correct
3. I, II and III are correct
4. Only II and III are correct
Subtopic: Pigments |
87%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
The ‘light reaction’ of photosynthesis in higher plants does not include:
1. Light absorption
2. Water splitting and oxygen release
3. Formation of ATP and NADPH
4. Fixation of carbon
1. Light absorption
2. Water splitting and oxygen release
3. Formation of ATP and NADPH
4. Fixation of carbon
Subtopic: Dark Reaction: Biosynthetic Phase | Light Reactions |
89%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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Match each item in COLUMN I with one in COLUMN II and select the correct match from the codes given:
Codes
| COLUMN I | COLUMN II | ||
| A | Chlorophyll a | P | Bright or blue-green |
| B | Chlorophyll b | Q | Yellow-green |
| C | Xanthophylls | R | Yellow |
| D | Carotenoids | S | Yellow to yellow-orange |
Codes
| A | B | C | D | |
| 1. | P | Q | R | S |
| 2. | Q | R | S | P |
| 3. | R | S | P | Q |
| 4. | S | P | Q | R |
Subtopic: Pigments |
92%
From NCERT
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In the Z-scheme, transfer of electrons starts from:
1. the PS II uphill to the acceptor, down the electron transport chain to PS I, transferred to another acceptor after excitation, and finally downhill to NADP+ reducing it to NADPH + H+.
2. the PS II downhill to the acceptor, down the electron transport chain to PS I, transferred to another acceptor after excitation, and finally uphill to NADP+ reducing it to NADPH + H+.
3. the PS I uphill to the acceptor, down the electron transport chain to PS II, transferred to another acceptor after excitation, and finally downhill to NADP+ reducing it to NADPH + H+.
4. the PS I downhill to the acceptor, down the electron transport chain to PS II, transferred to another acceptor after excitation, and finally uphill to NADP+ reducing it to NADPH + H+.
1. the PS II uphill to the acceptor, down the electron transport chain to PS I, transferred to another acceptor after excitation, and finally downhill to NADP+ reducing it to NADPH + H+.
2. the PS II downhill to the acceptor, down the electron transport chain to PS I, transferred to another acceptor after excitation, and finally uphill to NADP+ reducing it to NADPH + H+.
3. the PS I uphill to the acceptor, down the electron transport chain to PS II, transferred to another acceptor after excitation, and finally downhill to NADP+ reducing it to NADPH + H+.
4. the PS I downhill to the acceptor, down the electron transport chain to PS II, transferred to another acceptor after excitation, and finally uphill to NADP+ reducing it to NADPH + H+.
Subtopic: Light Reaction: Electron Transport |
82%
From NCERT
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The splitting of water during oxygenic photosynthesis in higher plants:
I. is associated with PS II
II. releases one molecule of oxygen on splitting of two water molecules
III. releases protons and oxygen in the thylakoid lumen
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 associated with PS II
II. releases one molecule of oxygen on splitting of two water molecules
III. releases protons and oxygen in the thylakoid lumen
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
Subtopic: Light Reactions |
74%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
Consider the given two statements:
| Statement I: | When only PS I is functional, the electron is circulated within the photosystem and the phosphorylation occurs due to cyclic flow of electrons. |
| Statement II: | Cyclic photophosphorylation also occurs when only light of wavelengths beyond 680 nm are available for excitation. |
| 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 |
80%
From NCERT
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Regarding the thylakoid membrane:
| I: | Plastoquinone is located within the membrane |
| II: | Plastocyanin is located on the inner lumen side of the membrane |
| III: | NADP reductase is located on the stroma side of the membrane |
| 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 |
Subtopic: Chemiosmotic hypothesis |
63%
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
Consider the given two statements:
Statement I: CF1 particle of ATP synthase makes ATP molecules.
Statement II: CF1 particle of ATP synthase is embedded in the thylakoid membrane and forms a transmembrane channel that carries out facilitated diffusion of protons across the membrane.
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: CF1 particle of ATP synthase makes ATP molecules.
Statement II: CF1 particle of ATP synthase is embedded in the thylakoid membrane and forms a transmembrane channel that carries out facilitated diffusion of protons across the membrane.
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: Chemiosmotic hypothesis |
68%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
Hints
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NEET 2023 - Target Batch - Aryan Raj Singh
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