Select Question Set:
Q. No.Inhibitory effect of O2 on photosynthesis is?
1. CAM pathway
2. Photorespiration
3. Fermentation
4. Krebs cycle
Subtopic: Photorespiration |
84%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Subtopic: Pigments |
82%
Level 1: 80%+
Please attempt this question first.
Hints
Subtopic: Dark Reaction: Biosynthetic Phase |
50%
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
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 |
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
88%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
. 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%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
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 |
62%
Level 2: 60%+
Please attempt this question first.
Hints
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 |
Level 4: Below 35%
Please attempt this question first.
Hints
Please attempt this question first.
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 |
Subtopic: Chloroplast Structure |
89%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
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 |
Subtopic: Pigments |
92%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Consider the two statements:
| Assertion (A): | Higher rate of photosynthesis is seen when plants are provided with blue and red regions of wavelengths of visible light. |
| Reason (R): | There is maximum absorption by chlorophyll a in the blue and the red regions of the visible light. |
| 1. | (A) is True but (R) is False |
| 2. | Both (A) and (R) are True and (R) explains (A) |
| 3. | Both (A) and (R) are True but (R) does not explain (A) |
| 4. | Both (A) and (R) are False |
Subtopic: Pigments |
92%
Level 1: 80%+
Please attempt this question first.
Hints
Please attempt this question first.
Select Question Set:
© 2025 GoodEd Technologies Pvt. Ltd.