Which one of the following elements in plants not re-mobilized?

1.	Calcium	2.	Potassium
3.	Sulphur	4.	Phosphorus

Two cells A and B  are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure-7 atm, and diffusion pressure deficit 3 atm. Cell B has an osmotic pressure of 8 atm, turgor pressure of 3 atm, and diffusion pressure deficit of 5 atm. The result will be:

1. Movement of water from cell B to A

2. No movement of water

3. Equilibrium between the two

4. Movement of water from cell A to B

The translocation of organic solutes in sieve tube members is supported by:

1. root pressure and transpiration pull

2. P-proteins

3. mass flow involving a carrier and ATP

4. cytoplasmic streaming

Which one of the following is correctly matched?

1. Passive transport of nutrients-ATP

2. Apoplast- Plasmodesmata

3. Potassium- Readily mobilized

4. Bakanae of rice seedlings-F Skoog

In a ring-girdled plant:

Transpiration and root pressure cause water to rise in plants by:

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