Which of the following is not a feature of the active transport of solutes in plants?

1. Occurs against the 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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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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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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Which one of the following elements in plants not re-mobilized?
1.  Calcium

2.  Potassium
3.  Sulphur
4.  Phosphorus

Subtopic:  Photosynthesis Transpiration Compromise & Mineral Translocation |
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Which one of the following is correctly matched?

1. Passive transport of nutrients-ATP

2. Apoplast- Plasmodesmata

3. Potassium- Readily mobilized

4. Bakane of rice seedlings-F Skoog

Subtopic:  Photosynthesis Transpiration Compromise & Mineral Translocation |
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Transpiration and root pressure cause water to rise in plants by
1. pulling it upward
2. pulling and pushing it, respectively
3. pushing it upward
4. pushing and pulling it, respectively

Subtopic:  Transpiration & Guttation |
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A column of water within xylem vessels of tall trees does not break under its weight because of
1. Dissolved sugar in water
2. Tensile strength of water
3. Lignification of xylem vessels
4. Positive root pressure

Subtopic:  Transpiration Pull: Illustration |
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Root pressure develops due to
1. Active absorption
2. Low osmotic potential in Soil
3. Passive absorption
4. Increase in transpiration

Subtopic:  Ascent of Sap |
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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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