English

Give reason for the following: A plant cell, when kept in a hypertonic salt solution for about 30 minutes, turns flaccid. - Biology

Advertisements
Advertisements

Question

Give reason for the following:

A plant cell, when kept in a hypertonic salt solution for about 30 minutes, turns flaccid.

Answer in Brief
Advertisements

Solution

In a hypertonic solution, the solution outside the cell has a higher solute concentration than the fluids inside the cell. Therefore, water flows out of the plant cell due to exosmosis. The cytoplasm shrinks, the plasma membrane withdraws away from the cell wall and the cell becomes flaccid. Hence, a plant cell, when kept in a hypertonic salt solution for about 30 minutes, turns flaccid.

shaalaa.com
  Is there an error in this question or solution?

RELATED QUESTIONS

Explain Turgor pressure


Differentiate between the following:
Turgor pressure and wall pressure 


Mention whether the following statement is true  or false Correct the false statement by altering the last word only. 

Cells that have lost their water content are said to be deplasmolysed. 


Give reasons for the following:

If you sprinkle some common salt on grass growing on a lawn, it is killed at that spot.


A leaf cell of a water plant was placed in a liquid other than pond water. After sometime, it assumed a shape as shown below:

  1. Give the term for the state of the cell it has acquired.
  2. Name the structure which acts as a selectively permeable membrane.
  3. Comment on the nature (tonicity) of the liquid surrounding the cell.
  4. Name any one feature of this plant cell which is not present in an animal cell.
  5. Redraw in the space provided, the diagram of the cell if it is soon placed in ordinary water for some time.

The below diagram represents a plant cell after being placed in a strong sugar solution. Guidelines 1 to 5 indicate the following:

1. Cell wall
2. Plasma membrane.
3. Protoplasm
4. Large vacuole
5. Nucleus
Study the diagram and answer the questions that follow :
(i) What is the state of the cell shown in the diagram?
(ii) Name the structure which acts as a selectively permeable membrane.
(iii) If the cell had been placed in distilled water instead of a strong sugar solution which features: would not have been present?
(iv) If the cell in the diagram possessed chloroplasts where would these be present?
(v) Name any one feature of this plant cell which is not present in animal cells.


Name the following:

The process by which wilting or drooping of leaves occurs.


Fill in the Blank
The condition opposite to turgid is ___________.


Fill in the Blank
Wilting and drooping of leaves is due to loss of ________.


Given below is the figure of a plant cell showing different kinds of pressure acting upon it. Study the figure and answer the questions that follow:

  1. In the figure, 1, 2 and 3 represent:
    1. Cytoplasm, Nucleus, Vacuole respectively
    2. Vacuole, Cytoplasm, Cell wall respectively.
    3. Cytoplasm, Cell membrane and vacuole respectively.
    4. Cytoplasm, Cell wall and Vacuole respectively.
  2. B in the figure represents:
    1. Osmotic pressure
    2. Turgor pressure
    3. Wall pressure
    4. Diffusion pressure
  3. A in the figure represents:
    1. irnbibition pressure
    2. Wall pressure
    3. Turgor pressure
    4. Osmotic pressure
  4. C in the figure represents:
    1. Turgor pressure
    2. Osmotic pressure
    3. Wall pressure
    4. Imbibition pressure
  5. Draw a neat and labelled diagram of a plasmolyzed plant cell.

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×