Capillary forces will lift water _______________ in a glass tube equal to the diameter of a xylem element.

1. 10.4 meters

2. 8.3 meters

3. 5.6 meters

4. less than 1 meter

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The process responsible for the movement of water from roots to all other parts of plants is

1. Evaporation fo Water from leaves 

2. Capillary action 

3. Active transport 

4. Both 1 and 2

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The combination of pressure potential and solute potential is

1. water potential

2. Osmotic pressure

3. osmotic potential

4. Both b and c

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Scientists take advantage of _______________ in studying translocation by phloem.

1. ants

2. aphids

3. bees

4. Mosquitoes

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What may be regarded as a valid difference between active and passive absorption of water?

1. Passive absorption is affected by the presence of metabolic inhibitors

2. active absorption is accelerated by the presence of auxins

3. Passive absorption is dependent on development of root pressure

4. Active absorption is dependent on aerial parts of plants for the development of a pull force.

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What is never zero in a cell-

1. Solute potential

2. Water potential

3. DPD

4. Diffusion pressure

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Water potential begins to become less negative

1. in the dark of the night

2. just before dawn

3. at sunrise

4. at noon

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The amount of pressure needed to stop fluid from moving by osmosis into a solution is referred to as the

1. Osmotic pressure

2. water potential

3. pressure potential

4. solute potential

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In the absence of transpiration water moves up xylem because of

1. root pressure

2. turgor pressure

3. evaporation

4. high soil mineral concentration

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Pressure potential is positive at the time of

1. Plasmolysis

2. Transpiration

3. Guttation

4. More than one is correct

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