To initiate cell plasmolysis, the salt concentration must be :

1. isotonic

2. hypertonic

3. hypotonic

4. atonic

Turgor pressure is also referred to as

1. solute potential

2. water potential

3. pressure potential

4. osmotic potential

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

1. Evaporation of Water from leaves 

2. Capillary action 

3. Active transport 

4. Both 1 and 2

What is never zero in a cell-

1. Solute potential

2. Water potential

3. DPD

4. Diffusion pressure

Loss of solutes from a cell leads to

1. Increase in water potential

2. Decrease in solute potential

3. Increase in pressure potential

4. All of the above

About _______________ % of the water taken in by roots is lost by transpiration.

1. 100

2. 98

3. 90

4. 60

Which is an incorrect statement.

1. Translocation of minerals up the xylem is an active process

2. The target cells unload the minerals by an active process

3. The absorption of minerals by plants is mostly an active process

4. Minerals usually flow up the vessels along with the transpiration stream.

A structural attribute of guard cells that aid in its effective functioning is

1. Large cell size

2. Radial micellation in walls

3. Thick walls

4. All of the above

Continuity of protoplasm in sieve elements is maintained through

1. Cytoplasmic strands

2. P proteins

3. Vacuoles

4. Walls

Mass flow seems to be the prominent mode of transport during

1. Translocation of organic solutes within phloem.

2. translocation of water and minerals in xylem

3. Apolplastic movement of water in plants

4. All of the above