Inhibitory effect of O2 on photosynthesis is?
1. CAM pathway
2. Photorespiration
3. Fermentation
4. Krebs cycle
Subtopic: Photorespiration |
85%
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Subtopic: Pigments |
78%
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Subtopic: Dark Reaction: Biosynthetic Phase |
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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) |
88%
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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 |
63%
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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
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 |
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Membranous system consisting of grana in the chloroplast:
I: is responsible for trapping the light energy.
II: is responsible for the synthesis of ATP and NADPH.
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
I: is responsible for trapping the light energy.
II: is responsible for the synthesis of ATP and NADPH.
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: Chloroplast Structure |
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A chromatographic separation of the leaf pigments shows that the colour that we see in leaves is not due to a single pigment but due to four pigments. The colours bright or blue green in the chromatogram are associated with:
1. Chlorophyll a
2. Chlorophyll b
3. Xanthophylls
4. Carotenoids
1. Chlorophyll a
2. Chlorophyll b
3. Xanthophylls
4. Carotenoids
Subtopic: Pigments |
93%
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Consider the two statements:
Assertion: Higher rate of photosynthesis is seen when plants are provided with blue and red regions
of wavelengths of visible light.
Reason: There is maximum absorption by chlorophyll a in the blue and the red regions of the visible light.
1. Assertion is true but Reason is false
2. Both Assertion and Reason are true and Reason explains Assertion
3. Both Assertion and Reason are true but Reason does not explain Assertion
4. Both Assertion and Reason are false
Assertion: Higher rate of photosynthesis is seen when plants are provided with blue and red regions
of wavelengths of visible light.
Reason: There is maximum absorption by chlorophyll a in the blue and the red regions of the visible light.
1. Assertion is true but Reason is false
2. Both Assertion and Reason are true and Reason explains Assertion
3. Both Assertion and Reason are true but Reason does not explain Assertion
4. Both Assertion and Reason are false
Subtopic: Pigments |
91%
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