Turgor Pressure

Q. What is turgor pressure ?

Q.

What is the difference between turgor pressure and wall pressure?

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.

Arrange in logical sequence - Stoma, Mesophyll Cells, Xylem, Sub stomatal space, intercellular space...

Q.

Give the equivalent terms for the following:

(a) Pressure exerted by the cell contents on the cell wall

(b) The condition in which the cell contents are shrunken.

(c) Loss of water through a cut stem.

Q. is the pressure exerted by the cytoplasm on the cell wall.

1. Wall pressure
2. Turgidity
3. Turgor pressure

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

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

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

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

Q.

Explain the mechanism of folding of leaves of mom is pudica in response to touch ?

Q.

Explain the opening and closing of stomata.

Q.

The ability of the Venus Flytrap to capture insects is due to:

1. Rapid turgor pressure changes

2. Specialized "muscle -like" cells

3. A passive process requiring no special ability on the part of the plant

4. Chemical stimulation by the prey

Q.

Which one among the following is not true?

1. The increase in the size of a dry seed, soaked in water is the outcome of growth.

2. Growth is accomplished by metabolic processes.

3. The causative force for cell growth is turgor pressure.

4. Growth is restricted to living cells.

Q.

A plant cell burst when the:

1. turgor pressure is equal to wall pressure
   

2. turgor pressure exceeds wall pressure
   

3. wall pressure exceeds turgor pressure
   

4. turgor pressure is lesser than wall pressure

Q.

The rapid drooping of the leaves of the touch-me-not plant when we touch it is an example of ___.

1. Transpirational pull

2. Turgor movement

3. Capillary force

4. Plasmolysis

Q.

A marine fish is kept in fresh water :

(a) What would happen to the fish?

(b) Name the pressure develops inside the cells of the fish.

Q.

Statement (i): To counter act the increase in turgor pressure in plant cells, the cell wall produces an equal and opposite i.e., wall pressure
Statement (ii): When plant cells undergo endosmosis, they swell but do not burst

1. Statement a is correct and b is wrong
2. Both the statements a and b are correct and a is the reason for b
3. Statement a is wrong and b is correct
4. Bothe the statements a and b are correct and a is not the reason for b

Q. Assertion :The positive pressure that develops in the plant cell due to entry of water is called turgor pressure. Reason: The turgor pressure is responsible for enlargement and extension during growth of cells.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. A and B cells are contiguous. Cell A has OP = 10 atm, TP = 7 atm and DPD = 3 atm. Cell B has OP = atm, TP = 3 atm and DPD = 5 atm. The result would be

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

Q. Discuss the importance of turgor pressure in life activities of plants.

Q.

The pressure which develops inside the cell protoplasts against the cell wall is better known as

1. Osmotic pressure

2. Diffusion pressure

3. Turgor pressure

4. Root pressure

Q. Assertion :Water entering a plant cell makes it turgid.
Reason: Entry of water into a cell develops wall pressure inside the cell.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. How do changes in TP help in opening and closing mechanism of stomata ?

Q.

On stimulation of axon membrane, the spot becomes depolarised and is termed as the region of ___

1. Regulation

2. Recovery

3. Excitation

4. Resting

Q. Differentiate between Turgor pressure and wall pressure.

Q. Entry of water into a cell causes swelling of protoplast due to

1. Osmotic pressure
2. Turgor pressure
3. Imbibition
4. DPD

Q. What maintains the shape of a cell?

1. Suction pressure
2. Turgor pressure
3. Osmotic pressure
4. Wall pressure

Q.

Turgor pressure in plants results when

1. cells lose water from their water vacuoles.

2. cells contain water vacuoles that are full of water.

3. water is being used up in photosynthesis.

4. water is being evaporated from the leaves.

Q. Turgor pressure develops in epiblema cells of root due to

1. High water potential of cortical cells
2. Entry of water into root hair and increase in volume of cell sap
3. Filling of large vacuole in root hair with cell sap
4. Osmotic diffusion of water into pericycle through passage cells

Q. In a plant cell OP is equal to
(a) Diffusion Pressure Deficit + Turgour Pressure
(b) Diffusion Pressure Deficit - Turgour Pressure
(c) Turgour Pressure - Diffusion Pressure Deficit
(d) Turgour Pressure - Diffusion Pressure

Q. Turgor pressure of a plant cell increases due to

1. Endosmosis
2. Exosmosis
3. Wall pressure
4. Diffusion pressure

Q. Passage of water through a semipermeable membrane increases ............. inside the cell.

1. Turgor pressure
2. Osmotic pressure
3. Wall pressure
4. Suction pressure