Q. No.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
| 1. | Calcium | 2. | Potassium |
| 3. | Sulphur | 4. | Phosphorus |
1. lignified thick walls
2. cohesion and adhesion
3. weak gravitational pull
4. transpiration pull
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
2. Potassium influx and efflux
3. Starch hydrolysis
4. Guard cell photosynthesis
In a ring-girdled plant:
2. the root dies first
3. the shoot and root die together
4. Neither root nor shoot will die
Transpiration and root pressure cause water to rise in plants by:
2. pulling and pushing it, respectively
3. pushing it upward
4. pushing and pulling it, respectively
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
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