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Q. No.Julius von Sachs provided evidence for:
I:
production of glucose when plants grow
II:
location of green substance in plants in special bodies
Which of the following will be true in light of the information given above?
A:
Glucose produced during photosynthesis is usually stored as cellulose in plants.
B:
The ‘green substance’ refers to chlorophyll.
C:
‘Special bodies’ refer to chloroplasts in the plant cells.
1.
Only A and B
2.
Only B and C
3.
Only A
4.
A, B and C
Subtopic: Historical View: Experiments |
78%
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The correct and complete equation for the process of photosynthesis in higher plants will be:
| 1. | 6CO2 + 12H2O + light energy → C6H12O6 + 6O2+ 6H2O |
| 2. | 6CO2 + 6H2O + light energy → C6H12O6 + 6O2 |
| 3. | CO2 + H2O + light energy → [CH2O] + O2 |
| 4. | C6H12O6 + 6O2 → 6CO2 + 6H2O |
Subtopic: Historical View: Experiments |
87%
From NCERT
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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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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 |
Subtopic: Dark Reaction: Biosynthetic Phase | Dark Reaction : Calvin Cycle |
79%
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The accessory pigments of photosynthesis:
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 |
86%
From NCERT
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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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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 |
| 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:
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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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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