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Q. No.Consider the given two statements:
Statement I:
At the source sugars are actively transported in to a sieve tube.
Statement II:
At the sink incoming sugars are passively transported out of the phloem.
1.
Statement I is incorrect; Statement II is incorrect
2.
Statement I is incorrect; Statement II is correct
3.
Statement I is correct; Statement II is incorrect
4.
Statement I is correct; Statement II is correct
Subtopic: Phloem Translocation |
73%
From NCERT
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In terms of fixing carbon dioxide, when compared to a C3 plant, a C4 plant:
| 1. | is twice as efficient and loses only half as much water for the same amount of carbon dioxide fixed. |
| 2. | is equally efficient and loses only half as much water for the same amount of carbon dioxide fixed. |
| 3. | is twice as efficient and loses same amount of water for the same amount of carbon dioxide fixed. |
| 4. | is equally efficient and loses same amount of water for the same amount of carbon dioxide fixed. |
Subtopic: Photosynthesis Transpiration Compromise & Mineral Translocation |
88%
From NCERT
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When water flows into the cell and out of the cell and are in equilibrium, the cells are said to be:
1. Flaccid
2. Plasmolysed
3. Turgid
4. Wilted
Subtopic: Plant Water Relations: Plasmolysis |
79%
From NCERT
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In facilitated diffusion, membrane proteins:
| I: | provide sites at which molecules cross the membrane against the concentration gradient. |
| II: | set up a concentration gradient for diffusion to occur. |
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: Facilitated Diffusion |
From NCERT
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By convention, the water potential of pure water at standard temperatures, which is not under any pressure, is take to be:
1. 0 MPa
2. 760 Mpa
3. - 5 Mpa
4. 1.0 MPa
Subtopic: Plant Water Relations: Water Potential: DPD |
88%
From NCERT
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Consider the two given statements regarding mass or bulk flow in plants:
| Statement I: | It is a characteristic of mass flow that substances, whether in solution or in suspension, are swept along at the same pace. |
| Statement II: | Bulk flow can be achieved only through a negative hydrostatic pressure gradient. |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is correct; Statement II is correct |
| 3. | Statement I is incorrect; Statement II is incorrect |
| 4. | Statement I is incorrect; Statement II is correct |
Subtopic: Phloem Translocation: Short Distance Transport | Phloem Translocation |
70%
From NCERT
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When a carrier protein facilitates the movement of two molecules across the membrane in opposite direction, it is called :
1. Uniport
2. Transport
3. Antiport
4. Symport
1. Uniport
2. Transport
3. Antiport
4. Symport
Subtopic: Means of Transport: Active | Means of Transport: Passive |
91%
From NCERT
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Given below are two statements:
In light of the above statements, choose the most appropriate answer from the options given below :
1. Statement I is incorrect but Statement II is correct
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
| Statement I: | The forces generated by transpiration can lift a xylem-sized column of water over 130 meters height. |
| Statement II: | Transpiration cools leaf surfaces sometimes 10 to 15 degrees, by evaporative cooling. |
1. Statement I is incorrect but Statement II is correct
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is correct but Statement II is incorrect.
Subtopic: Transpiration & Guttation | Photosynthesis Transpiration Compromise & Mineral Translocation |
69%
From NCERT
NEET - 2023
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Movement and accumulation of ions across a membrane against their concentration gradient can be explained by:
| 1. | Active Transport | 2. | Osmosis |
| 3. | Facilitated Diffusion | 4. | Passive Transport |
Subtopic: Means of Transport: Active |
72%
From NCERT
NEET - 2023
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Match List I with List II:
Choose the correct answer from the options given below:
| List I | List II | ||
| A. | Cohesion | I. | More attraction in liquid phase |
| B. | Adhesion | II. | Mutual attraction among water molecules |
| C. | Surface tension | III. | Water loss in liquid phase |
| D. | Guttation | IV. | Attraction towards polar surfaces |
| Options: | A | B | C | D |
| 1. | II | I | IV | III |
| 2. | II | IV | I | III |
| 3. | IV | III | II | I |
| 4. | III | I | IV | II |
Subtopic: Transpiration & Guttation |
58%
From NCERT
NEET - 2023
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NEET 2026 - Target Batch - Vital
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