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Q. No.Match List - I with List-II.
List-I
List-II
a. Cohesion
b. Adhesion
c. Surface tension
d. Guttation
i. More attraction in the liquid phase
ii. Mutual attraction among water molecules
iii. Water loss in liquid phase
iv. Attraction toward polar surfaces
Choose the correct answer from the options given below:
Options:
(a)
(b)
(c)
(d)
1.
iii
i
iv
ii
2.
ii
i
iv
iii
3.
ii
iv
i
iii
4.
iv
iii
ii
i
b. Adhesion
c. Surface tension
d. Guttation
ii. Mutual attraction among water molecules
iii. Water loss in liquid phase
iv. Attraction toward polar surfaces
Subtopic: Â Transpiration & Guttation |
 71%
Level 2: 60%+
NEET - 2021
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Select the incorrect statement.
| 1. | Transport of molecules in phloem can be bidirectional. |
| 2. | The movement of minerals in the xylem is unidirectional. |
| 3. | Unloading of sucrose at the sink does not involve the utilization of ATP. |
| 4. | Elements most easily mobilized in plants from one region to another are phosphorus, sulfur, nitrogen, and potassium. |
Subtopic: Â The Pressure Flow or Mass Flow Hypothesis |
 80%
Level 1: 80%+
NEET - 2020
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Links
Active transport:
I. is the only means of uphill transport
II. requires ATP energy
1. Only I is true
2. Only II is true
3. Both I and II are true
4. Both I and II are false
I. is the only means of uphill transport
II. requires ATP energy
1. Only I is true
2. Only II is true
3. Both I and II are true
4. Both I and II are false
Subtopic: Â Means of Transport: Active |
 88%
Level 1: 80%+
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Hints
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Plasmolysis:
I. occurs when a plant cell [or tissue] is placed in a hypotonic solution.
II. water is first lost from the cytoplasm and then from the vacuole.
III. is usually reversible
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
I. occurs when a plant cell [or tissue] is placed in a hypotonic solution.
II. water is first lost from the cytoplasm and then from the vacuole.
III. is usually reversible
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 Plasmolysis |
 74%
Level 2: 60%+
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Identify the incorrect statement:
1. Pinus seeds cannot germinate and establish without the presence of mycorrhizae
2. Imbibition is a special type of diffusion
3. Bulk transport can be achieved only through a positive hydrostatic pressure
4. Numerically, osmotic pressure is equivalent to the osmotic potential, but the sign is opposite
1. Pinus seeds cannot germinate and establish without the presence of mycorrhizae
2. Imbibition is a special type of diffusion
3. Bulk transport can be achieved only through a positive hydrostatic pressure
4. Numerically, osmotic pressure is equivalent to the osmotic potential, but the sign is opposite
Subtopic: Â Radial Transport |
 82%
Level 1: 80%+
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Water has some important physical properties. Water molecules are attracted to each other in the liquid phase more than to water in the gas phase. This is called as:
1. Cohesion
2. Adhesion
3. Adnation
4. Surface tension
1. Cohesion
2. Adhesion
3. Adnation
4. Surface tension
Subtopic: Â Transpiration & Guttation |
 56%
Level 3: 35%-60%
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What is not true regarding diffusion in context of biology?
1. Molecules move in a random fashion with a net result that substance move from regions of higher concentration to regions of lower concentration.
2. No ATP energy expenditure takes place.
3. It is a very rapid process dependent on a living system.
4. It is the only means for gaseous transport in plant cells.
1. Molecules move in a random fashion with a net result that substance move from regions of higher concentration to regions of lower concentration.
2. No ATP energy expenditure takes place.
3. It is a very rapid process dependent on a living system.
4. It is the only means for gaseous transport in plant cells.
Subtopic: Â Diffusion |
 82%
Level 1: 80%+
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The innermost layer of the cortex in the roots that restricts the apoplastic transport of water inside is called as:
1. Hypodermis
2. Endodermis
3. Pericycle
4. Stele
1. Hypodermis
2. Endodermis
3. Pericycle
4. Stele
Subtopic: Â Water Absorption |
 86%
Level 1: 80%+
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What would be incorrect for phloem in angiosperms?
1. Phloem fibres, at maturity, lose their protoplasm and become dead.
2. The function of sieve tubes is controlled by the nucleus of companion cell.
3. The direction of movement in the phloem can be bi-directional.
4. Phloem sap is mainly water and starch.
1. Phloem fibres, at maturity, lose their protoplasm and become dead.
2. The function of sieve tubes is controlled by the nucleus of companion cell.
3. The direction of movement in the phloem can be bi-directional.
4. Phloem sap is mainly water and starch.
Subtopic: Â Phloem Translocation: Short Distance Transport |Â Phloem Translocation |
 70%
Level 2: 60%+
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Apoplastic movement of water in plants:
| 1. | involves crossing the cell membrane multiple times |
| 2. | is through mass flow |
| 3. | accounts for a very small fraction of water flow in roots |
| 4. | is relatively much slower than the symplastic flow |
Subtopic: Â Water Absorption |
 61%
Level 2: 60%+
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