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Q. No.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
1. Flaccid
2. Plasmolysed
3. Turgid
4. Wilted
Subtopic: Plant Water Relations: Plasmolysis |
79%
Level 2: 60%+
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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 |
Level 3: 35%-60%
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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%
Level 1: 80%+
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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 |
71%
Level 2: 60%+
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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%
Level 2: 60%+
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%
Level 2: 60%+
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%
Level 3: 35%-60%
NEET - 2023
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Identify the correct statements regarding Mass flow hypothesis.
Choose the correct answer from the options given below:
| A: | Mass flow is faster than diffusion. |
| B: | Mass flow is the result of pressure difference between the end points. |
| C: | Different substances involved in mass flow move at different paces. |
| D: | Mass flow can result through either a positive or a negative hydrostatic pressure gradient. |
| 1. | (A), (C), (D) only | 2. | (B), (C), (D) only |
| 3. | (A), (B), (C) only | 4. | (A), (B), (D) only |
Subtopic: The Pressure Flow or Mass Flow Hypothesis |
Level 3: 35%-60%
NEET - 2023
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During symport, two different molecules move across the membrane:
| 1. | in same direction with the help of different carriers located at a common site |
| 2. | in same direction with the help of different carriers located at different sites in the same cell |
| 3. | in same direction with the help of same carrier |
| 4. | in opposite direction with the help of same carrier |
Subtopic: Means of Transport: Passive |
53%
Level 3: 35%-60%
NEET - 2023
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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 correct but Statement II is correct
2. Statement I is incorrect but Statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect
| I: | The process of translocation through phloem is unidirectional but through xylem, it is bidirectional |
| II: | The most readily mobilized elements are phosphorus, sulphur, nitrogen and potassium. |
1. Statement I is correct but Statement II is correct
2. Statement I is incorrect but Statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect
Subtopic: Phloem Translocation | Photosynthesis Transpiration Compromise & Mineral Translocation |
56%
Level 3: 35%-60%
NEET - 2023
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