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Q. No.Match each item in COLUMN I with one in COLUMN II and select the correct match from the codes given:
COLUMN I
[Property of water]
COLUMN II
[Description]
A
Cohesion
P
An ability to resist a pulling force
B
Adhesion
Q
The ability to rise in thin tubes
C
Tensile strength
R
Mutual attraction between water molecules
D
Capillarity
S
Attraction of water molecules to polar surfaces
Codes:
A
B
C
D
1.
R
S
P
Q
2.
R
S
Q
P
3.
P
Q
R
S
4.
P
Q
S
R
[Property of water]
[Description]
Subtopic: Transpiration & Guttation |
91%
From NCERT
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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 |
89%
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 |
92%
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 |
71%
From NCERT
NEET - 2023
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