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Q. No.Which one of the following is essential for the process of imbibition to take place?
I:
Water potential gradient between the adsorbent and the liquid imbibed
II:
Affinity between the absorbent and the liquid
III:
Affinity between the adsorbent and the liquid
IV:
Water potential gradient between the absorbent and the liquid imbibed
1.
Only III and IV
2.
Only I and II
3.
Only I and III
4.
Only II and IV
Subtopic: Imbibition |
From NCERT
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Xylem is associated with the translocation of:
| 1. | a variety of organic and inorganic solutes |
| 2. | water and a variety of organic and inorganic solutes |
| 3. | water, mineral salts, some organic phosphorus and hormones |
| 4. | water, mineral salts, some organic nitrogen and hormones |
Subtopic: Long Distance Transport of Water |
75%
From NCERT
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What could be considered as the most significant contribution of root pressure in the process of water transport?
| 1. | It provides a push which plays a major role in movement of water up the trees |
| 2. | It re-establishes the continuous chain of water molecules in the xylem which often breaks under the enormous tension created by transpiration |
| 3. | It helps in active transport of various ions into the vascular tissues of the root from the soil |
| 4. | It helps in loss of excess water in its liquid phase (guttation) |
Subtopic: Transpiration & Guttation |
71%
From NCERT
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"Girdling Experiment" was performed by Plant Physiologists to identify the plant tissue through which:
| 1. | osmosis is observed |
| 2. | water is transported |
| 3. | food is transported |
| 4. | for both water and food transportation |
Subtopic: The Pressure Flow or Mass Flow Hypothesis |
58%
From NCERT
NEET - 2022
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NEET 2025 - Target Batch
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Which of the following is not observed during apoplastic pathway?
| 1. | Apoplast is continuous and does not provide any barrier to water movement. |
| 2. | Movement of water occurs through intercellular spaces and wall of the cells. |
| 3. | The movement does not involve crossing of cell membrane |
| 4. | The movement is aided by cytoplasmic streaming |
Subtopic: Pathways of transport |
64%
From NCERT
NEET - 2022
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Addition of more solutes in a given solution will:
1. not affect the water potential at all
2. raise its water potential
3. lower its water potential
4. make its water potential zero
Subtopic: Plant Water Relations: Water Potential: DPD |
82%
From NCERT
NEET - 2022
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Which of the following statements above facilitated diffusion is incorrect?
| 1. | Special proteins of the membrane help in this process |
| 2. | Porins are involved in this process |
| 3. | Movement of the molecule occurs against the concentration gradient |
| 4. | ATP is not required for this process |
Subtopic: Facilitated Diffusion |
80%
From NCERT
NEET - 2022
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Phloem sap in the plants mainly consists of :
1. fructose and water
2. fructose and sucrose
3. glucose and water
4. sucrose and water
Subtopic: Phloem Translocation |
75%
From NCERT
NEET - 2022
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Which of the following physical properties of water is/are responsible for providing water, the high tensile strength and high capillarity during ascent of sap in the plants?
1. Surface tension and cohesion
2. Cohesion, adhesion and surface tension
3. Cohesion only
4. Adhesion and cohesion
Subtopic: Transpiration & Guttation |
83%
From NCERT
NEET - 2022
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Which of the following was proved by girdling experiment?
| 1. | Apoplastic movement of water occurs through intercellular spaces |
| 2. | Symplastic movement of water occurs through interconnected protoplast |
| 3. | Xylem is responsible for uptake of water |
| 4. | Phloem is responsible for translocation of food |
Subtopic: Phloem Translocation |
83%
From NCERT
NEET - 2022
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