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Q. No.A plant is provided with ideal conditions for photosynthesis and supplied with isotope 14CO2 . When the products of the process are analysed carefully, what would be the nature of products?
1. Glucose and oxygen are labelled
2. Oxygen is labelled, but glucose is normal
3. Glucose and oxygen are normal.
4. Glucose is labelled, but oxygen is normal
Subtopic: Historical View: Experiments |
69%
From NCERT
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Fixation of one CO2, molecule through Calvin cycle requires:
1. 1 ATP and 2 NADPH2
2. 2 ATP and 2 NADPH2
3. 3 ATP and 2 NADPH2
4. 2 ATP and 1 NADPH2
1. 1 ATP and 2 NADPH2
2. 2 ATP and 2 NADPH2
3. 3 ATP and 2 NADPH2
4. 2 ATP and 1 NADPH2
Subtopic: Dark Reaction : Calvin Cycle |
85%
From NCERT
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Molecular formula of chlorophyll-b is
1. \(\mathrm{C}_{55} \mathrm{H}_{70} \mathrm{O}_6 \mathrm{~N}_4 \mathrm{Mg}\)
2. \(\mathrm{C}_{55} \mathrm{H}_{72} \mathrm{O}_5 \mathrm{~N}_4 \mathrm{Mg}\)
3. \(\mathrm{C}_{55} \mathrm{H}_{70} \mathrm{O}_5 \mathrm{~N}_4 \mathrm{Mg}\)
4. \(\mathrm{C}_{54} \mathrm{H}_{70} \mathrm{O}_6 \mathrm{~N}_4 \mathrm{Mg}\)
1. \(\mathrm{C}_{55} \mathrm{H}_{70} \mathrm{O}_6 \mathrm{~N}_4 \mathrm{Mg}\)
2. \(\mathrm{C}_{55} \mathrm{H}_{72} \mathrm{O}_5 \mathrm{~N}_4 \mathrm{Mg}\)
3. \(\mathrm{C}_{55} \mathrm{H}_{70} \mathrm{O}_5 \mathrm{~N}_4 \mathrm{Mg}\)
4. \(\mathrm{C}_{54} \mathrm{H}_{70} \mathrm{O}_6 \mathrm{~N}_4 \mathrm{Mg}\)
Subtopic: Chloroplast Structure |
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Inhibitory effect of O2 on photosynthesis is?
1. CAM pathway
2. Photorespiration
3. Fermentation
4. Krebs cycle
1. CAM pathway
2. Photorespiration
3. Fermentation
4. Krebs cycle
Subtopic: Photorespiration |
85%
From NCERT
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Subtopic: Pigments |
80%
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Subtopic: Dark Reaction: Biosynthetic Phase |
51%
From NCERT
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Which of these is incorrect for C4-plants?
1. Kranz anatomy
2. CO2 acceptor is PEP
3. PEP case in mesophyll
4. RuB is CO in mesophyll
1. Kranz anatomy
2. CO2 acceptor is PEP
3. PEP case in mesophyll
4. RuB is CO in mesophyll
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
89%
From NCERT
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. Conditions required for cyclic photophosphorylation are
1. aerobic condition, low light intensity
2. aerobic condition, optimum light intensity
3. anaerobic condition, low light intensity
4. anaerobic condition, optimum light intensity
1. aerobic condition, low light intensity
2. aerobic condition, optimum light intensity
3. anaerobic condition, low light intensity
4. anaerobic condition, optimum light intensity
Subtopic: Light Reaction: Photophosphorylation |
64%
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The molecular formula of chl.b is:
1. C55H70O6N4Mg
2. C55H72O5N4Mg
3. C55H70O5N4Mg
4. C54H70O6N4Mg
1. C55H70O6N4Mg
2. C55H72O5N4Mg
3. C55H70O5N4Mg
4. C54H70O6N4Mg
Subtopic: Pigments |
65%
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T.W Engelmann:
| I: | described first absorption spectrum of photosynthesis. |
| ii: | first showed that it is only the green part of the plants that could release oxygen. |
| 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: Historical View: Experiments |
From NCERT
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