Turgor Pressure

Q.

What would be the pressure potential of a flaccid cell?

1. Positive

2. Negative

3. Zero

4. Cannot be determined

Q.

Diffusion pressure deficit is the amount by which two solutions differs in there

1. T.P

2. O.P

3. D.P

4. W.P

Q.

Is water movement due to DPD?

Q. If turgor pressure becomes equal to osmotic pressure

1. water leaves the cell
2. water enters the cell
3. no exchange of water takes place
4. solute pass out of the cell

Q. Which of the following is true in a fully turgid cell?

1. TP = 0
2. WP = 0
3. DPD = 0
4. OP = 0

Q. When water moves through a semipermeable membrane, then which of the following pressure develops?

1. WP
2. TP
3. OP
4. SP

Q. The vlosure of lid of pitcher plant is:
a)A paratonic movement
b)A tropic movement
c)A turgor movement
d)An autonomous movement

Q. If turgor pressure becomes equal to osmotic pressure

1. water leaves the cell
2. water enters the cell
3. no exchange of water takes place
4. solute pass out of the cell

Q. Diffusion pressure deficit is the amount by which two solutions differ in their

1. TP
2. OP
3. DP
4. WP

Q.

What is tuger pressure

Q. A and B are contiguous cells. A has osmotic pressure (OP) = 10 atm. Turgor pressure (TP) = 7 atm and Diffusion pressure deficit (DPD) = 3atm. B has OP = 8 atm, TP = 3 atm, DPD = 5 atm. The direction taken by the water would be

1. No movement of water
2. Equilibrium between the two
3. Movement of water from A to B
4. Movement of water from B to A

Q. Which among the following is the force which determines the flow of water from one cell to another?

1. TP
2. OP
3. DPD
4. WP

Q. Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm and turgor pressure 7 atm. Cell B has osmotic pressure 8 atm and turgor pressure 3 atm. The result will be:

1. Equilibrium between the two cells
2. Movement of water from cell A to B
3. Movement of water from cell B to A
4. No movement of water

Q. Difference between osmotic pressure and turgor pressure is

1. Diffusion Pressure Deficit (DPD)
2. Transpiration pull
3. Osmotic potential
4. Solute potential

Q. Cell ‘A’ with OP = 10 atm and TP = 5 atm is in contact with cell ‘B’ having OP = 15 atm and TP = 12 atm. The flow of water will be

1. equal flow
2. from A to B
3. from B to A
4. no flow

Q. Which is not true regarding stomata?

1. They are turgor operated valves
2. Have differentially thickened walls of guard cells
3. They open when OP of guard cell decreases
4. Show scotoactive opening in CAM plants

Q. Diffusion pressure deficit is the amount by which two solutions differ in their

1. TP
2. OP
3. DP
4. WP

Q. Select the correct events leading to the stomatal opening.
(a) The decline in guard cell solutes.
(b) Lowering of osmotic potential of guard cells.
(c) Rise in K ions in guard cells.
(d) Movement of water from neighboring cells into guard cells.
(e) Guard cells become flaccid.

1. a, e
2. b, c, d
3. a, c, d
4. b, d, e

Q. Cell ‘A’ with OP = 10 atm and TP = 5 atm is in contact with cell ‘B’ having OP = 15 atm and TP = 12 atm. The flow of water will be

1. from A to B
2. equal flow
3. from B to A
4. no flow

Q. Which of the following equation is wrong?

1. ${\psi }_s=-\pi$
2. DPD = – OP + TP
3. ${\psi }_w={\psi }_s+{\psi }_p$
4. ${\psi }_w=-DPD$

Q. If a cell A with DPD 4 bars is connected to cell B, C, D whose osmotic pressure and turgor pressure are respectively 4 and 4, 10 and 5, 7 and 3 bar, the flow of water will be:

1. B to A, C and D
2. A to D, B and C
3. C to A, B and D
4. A to B, C and D

Q. Which of the following is true in a fully turgid cell?

1. TP = 0
2. WP = 0
3. DPD = 0
4. OP = 0

Q. Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm and turgor pressure 7 atm. Cell B has osmotic pressure 8 atm and turgor pressure 3 atm. The result will be:

1. Movement of water from cell A to B
2. Movement of water from cell B to A
3. No movement of water
4. Equilibrium between the two cells

Q. DPD is equal to :

1. OP $\times$ TP (WP)
2. OP $+$ TP (WP)
3. OP $-$ TP (WP)
4. TP (WP) $-$ OP

Q. Which of the following equation is wrong?

1. ${\psi }_s=-\pi$
2. DPD = – OP + TP
3. ${\psi }_w={\psi }_s+{\psi }_p$
4. ${\psi }_w=-DPD$

Q. The turgor pressure of a turgid cell is equal and opposite to

1. Root pressure
2. All of the above
3. Diffusion pressure
4. Wall pressure

Q. Diffusion pressure deficit is the amount by which two solutions differ in their

1. TP
2. OP
3. DP
4. WP

Q. Differentiate between TP and WP in plant cells. List any four ways in which turgidity serves a useful purpose in the plants.

Q.

Which of the following statements are true/false?

a. The positive hydrostatic pressure is called turgor pressure.

b. Wall pressure is exerted to prevent the increase of protoplasm size.

c. Diffusion is more rapid in liquids than in gases.

d. Diffusion of water through a semi-permeable membrane is called imbibition.

e. Osmosis is the movement of substances which occurs along a diffusion gradient.

1. a and b are true, and c, d and e are false.

2. a and e are true, and b, c and d are false.

3. a and c are true, and b, d and e are false.

4. a and d are true, and b, c and e are false.

5. c, d and e are true, and a and b are false.

Q. When osmotic pressure becomes equal to the wall pressure, then

1. The flow of water will be inside the cell.
2. The flow of water will be outside the cell.
3. There will be no flow.
4. Both flow will occur inside as well as outside.