Match List - I with List-II.

List-I List-II
(a) Cohesion
(b) Adhesion
(c) Surface tension
(d) Guttation

(i) More attraction in liquid phase
(ii)Mutual attraction among water molecules
(iii)Water loss in liquid phase
(iv) Attraction towards polar surfaces

Choose the correct answer from the options given below.

    (a) (b) (c) (d)
1. (iii) (i) (iv) (ii)
2. (ii) (i) (iv) (iii)
3. (ii) (iv) (i) (iii)
4. (iv) (iii) (ii) (i)

Subtopic:  Transpiration & Guttation |
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The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and early morning is:

1. Root pressure

2. Imbibition

3. Plasmolysis

4. Transpiration

Subtopic:  Transpiration & Guttation |
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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:  Phloem Translocation: Short Distance Transport | Phloem Translocation |
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Xylem translocates:

1. Water, minerals salts, some nitrogen and hormones

2. Water only

3. Water and mineral salts only

4. Water, mineral and some organic nitrogen only

Subtopic:  Photosynthesis Transpiration Compromise & Mineral Translocation |
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What is the direction of movement of sugars in phloem?

1.  Bi-directional

2.  Non-multidirectional

3.  Upward

4.  Downward

Subtopic:  Phloem Translocation |
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Which of the following is not a feature of active transport of solutes in plants ?

1. Occurs against concentration gradient

2. Non-selective

3. Occurs through membranes

4. Requires ATP

Subtopic:  Means of Transport: Active |
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What will be the direction of flow of water when a plant cell is placed in a Hypotonic solution?

1. Water will flow in both directions.

2. Water will flow out of the cell.

3. Water will flow into the cell.

4. No flow of water in any direction.

Subtopic:  Plasmolysis |
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Which of the following facilitates opening of stomatal aperture?

1. Decrease in turgidity of guard cells

2. Radial orientation of cellulose microfibrils in the cell wall of guard cells

3. Longitudinal orientation of cellulose microfibrils in the cell wall of guard cells

4. Contraction of outer wall of guard cells

Subtopic:  Stomata: 3 | Stomata |
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The water potential of pure water is:

1. Less than zero

2. More than zero but less than one

3. More than one

4. Zero

Subtopic:  Plant Water Relations: Water Potential: DPD |
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A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap?

1.  Acidic

2.  Alkaline

3.  Low refractive index

4.  The absence of sugar

Subtopic:  Phloem Translocation |
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