Select the odd one out w.r.t. water stress
1.
Reduces CO2 availability
2.
Reduces metabolic activity
3.
Reduces temperature
4.
Reduces transpiration
Subtopic: Factors Affecting Photosynthesis |
72%
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In a hypothetical condition, if the thylakoid membrane tears off causing the lumen of thylakoid continuous with the stroma, which of the following processes is likely to be most affected?
| 1. | Reduction of NADP+ to NADPH |
| 2. | Absorption of sunlight by chloroplast |
| 3. | Movement of electrons from PS II to PS I |
| 4. | ATP synthesis |
Subtopic: Chemiosmotic hypothesis |
67%
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In C4 plants, bundle sheath cells
| 1. | Are rich in RuBisCo enzyme |
| 2. | Are rich in PEP case enzyme |
| 3. | Are not the sites of Calvin cycle |
| 4. | Are not the sites of release of CO2 |
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
86%
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Mark the incorrect statement w.r.t. C4 plants
| 1. | They have a special type of leaf anatomy. |
| 2. | They can tolerate higher temperatures. |
| 3. | They lack a wasteful process called photorespiration |
| 4. | They show lower productivity and minimum yield as compared to the C3 plants. |
Subtopic: C4 Cycle (Hatch & Slack Pathway) | C4 Plants Examples |
91%
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Kranz anatomy is not characterised by the presence of:
1. Bundle sheath
2. Palisade mesophyll
3. Spongy mesophyll
4. Stomata
1. Bundle sheath
2. Palisade mesophyll
3. Spongy mesophyll
4. Stomata
Subtopic: C4 Cycle (Hatch & Slack Pathway) | C4 Plants Examples |
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Kranz anatomy is found in?
| 1. | C3 plants |
| 2. | only in monocots |
| 3. | Both C4 and C3 plants |
| 4. | C4 plant |
Subtopic: C4 Cycle (Hatch & Slack Pathway) |
93%
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Subtopic: Pigments |
61%
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Herbicide that blocks electron transport from PS -II to PS-I by inhibiting electron flow between plastoquinone cytochrome is:
1. DCMU
2. Paraquat
3. DCPIP
4. None of these
1. DCMU
2. Paraquat
3. DCPIP
4. None of these
Subtopic: Light Reaction: Electron Transport |
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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 |
70%
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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 |
Subtopic: Dark Reaction : Calvin Cycle |
87%
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