In the photorespiratory pathway:
I:
there is no synthesis of sugars
II:
there is release of carbon dioxide with the utilization of ATP
III:
ATP is synthesized but NADPH is not synthesized
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: Â Photorespiration |
 79%
From NCERT
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Consider the given two statements:
| Statement I: | In C4 plants, photorespiration does not occur. |
| Statement II: | C4 plants do not have RuBisCO in any of their cells. |
| 1. | Both Statement I and Statement II are correct and Statement II explains Statement I |
| 2. | Both Statement I and Statement II are correct but Statement II does not explain Statement I |
| 3. | Statement I is correct but Statement II is incorrect |
| 4. | Statement I is incorrect but Statement II is correct |
Subtopic: Â C4 Cycle (Hatch & Slack Pathway) |
 86%
From NCERT
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Which of the following is not correctly matched?
| C3 plant | C4 plant | ||
| 1. | Cell type in which Calvin cycle takes place | Mesophyll | Bundle sheath |
| 2. | Primary carbon dioxide acceptor | RuBP | PEP |
| 3. | Primary carbon dioxide fixation product | PGA | OAA |
| 4. | Cell type in which the initial carboxylation reaction occurs | Mesophyll | Bundle sheath |
Subtopic: Â Dark Reaction : Calvin Cycle |Â C4 Cycle (Hatch & Slack Pathway) |
 78%
From NCERT
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Consider the given two statements:
| Statement I: | Despite the presence of a green leaf, optimal light and carbon dioxide conditions, the plant may not photosynthesize if the temperature is very low. |
| Statement II: | If a chemical process is affected by more than one factor, then its rate will be determined by the factor which is nearest to its minimal value. |
| 1. | Both Statement I and Statement II are correct and Statement II explains Statement I |
| 2. | Both Statement I and Statement II are correct but Statement II does not explain Statement I |
| 3. | Statement I is correct but Statement II is incorrect |
| 4. | Statement I is incorrect but Statement II is correct |
Subtopic: Â Factors Affecting Photosynthesis |
 77%
From NCERT
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Consider the given two statements:
| Statement I: | Except for plants in shade or in dense forests, light is rarely a limiting factor in nature. |
| Statement II: | There is a linear relationship between incident light and carbon dioxide fixation rates at low light intensities. |
| 1. | Both Statement I and Statement II are correct and Statement II explains Statement I |
| 2. | Both Statement I and Statement II are correct but Statement II does not explain Statement I |
| 3. | Statement I is correct but Statement II is incorrect |
| 4. | Statement I is incorrect but Statement II is correct |
Subtopic: Â Factors Affecting Photosynthesis |
 61%
From NCERT
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Consider the given two statements:
| Statement I: | Green house crops such as tomatoes and bell pepper are allowed to grow in carbon dioxide enriched atmosphere. This leads to higher yields. |
| Statement II: | C3 plants respond to higher carbon dioxide concentration by showing increased rates of photosynthesis, leading to higher productivity. |
| 1. | Both Statement I and Statement II are correct and Statement II explains Statement I |
| 2. | Both Statement I and Statement II are correct but Statement II does not explain Statement I |
| 3. | Statement I is correct but Statement II is incorrect |
| 4. | Statement I is incorrect but Statement II is correct |
Subtopic: Â Factors Affecting Photosynthesis |
 81%
From NCERT
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What percentage in atmosphere of carbon dioxide can become damaging to plants over long periods?
| 1. | 0.03 to 0.04 | 2. | 0.04 to 0.05 |
| 3. | 0.05 | 4. | more than 0.05 |
Subtopic: Â Factors Affecting Photosynthesis |
 77%
From NCERT
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Water affects the process of photosynthesis in higher plants because:
| I: | Water stress can cause the stomata to close, hence, reducing the carbon dioxide availability. |
| II: | Water stress also makes leaves wilt, thus, reducing the surface area of the leaves and their metabolic activity as well. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: Â Factors Affecting Photosynthesis |
 93%
From NCERT
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When one CO2 molecule is fixed as one molecule of triose phosphate, which of the following photochemically made, high energy chemical intermediates are used in the reduction phase?
1. 1 ATP + 1 NADPH
2. 1 ATP + 2 NADPH
3. 2 ATP + 1 NADPH
4. 2 ATP + 2 NADPH
1. 1 ATP + 1 NADPH
2. 1 ATP + 2 NADPH
3. 2 ATP + 1 NADPH
4. 2 ATP + 2 NADPH
Subtopic: Â Dark Reaction : Calvin Cycle |
From NCERT
NEET - 2022
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Identify the correct statements regarding chemiosmotic hypothesis:
Choose the correct answer from the options given below:
| (a) | Splitting of the water molecule takes place on the inner side of the membrane. |
| (b) | Protons accumulate within the lumen of the thylakoids. |
| (c). | The primary acceptor of electrons transfers the electrons to an electron carrier. |
| (d) | NADP reductase enzyme is located on the stroma side of the membrane. |
| (e) | Protons increase in number in stroma. |
Choose the correct answer from the options given below:
| 1. | (a), (b) and (e) | 2. | (a), (b) and (d) |
| 3. | (b), (c) and (d) | 4. | (b), (c) and (e) |
Subtopic: Â Chemiosmotic hypothesis |
 75%
From NCERT
NEET - 2022
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