English

Give reasons for the following: If you sprinkle some common salt on grass growing on a lawn, it is killed at that spot.

Advertisements
Advertisements

Question

Give reasons for the following:

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

Short/Brief Note
Advertisements

Solution

Common salt, when sprinkled on the grass, causes the plasmolysis of grass cells, ultimately leading to their death. Hence, if we sprinkle some common salt on grass growing on a lawn, it is killed on the spot.

shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Absorption by roots: The Processes Involved - Review Questions [Page 53]

APPEARS IN

Selina Concise Biology [English] Class 10 ICSE
Chapter 4 Absorption by roots: The Processes Involved
Review Questions | Q D. 3. (a) | Page 53

RELATED QUESTIONS

The diagram given below represents a plant cell after being placed in a strong sugar solution. Study the diagram and answer the questions that follow: 

  1. What is the state of the cell shown in the diagram?
  2. Name the structure that acts as a selectively permeable membrane.
  3. Label the parts numbered 1 to 4 in the diagram.
  4. How can the above cell be brought back to its original condition? Mention the scientific term for the recovery of the cell.
  5. State any two features of the above plant cell which is not present in animal cells.

A plant cell may burst when :


Explain Turgor pressure


The diagram below represents a process in plants. The setup was placed in bright sunlight. Answer the following questions:

a) Name the physiological process depicted in the diagram.

Why was oil added to the water?

b) When placed in bright sunlight for four hours, what do you observe with regard to the initial and final weight of the plant? Give a suitable reason for your answer

c) What happens to the level of water when this setup is placed in:

  1. Humid conditions?
  2. Windy conditions?

d) Mention any three adaptations found in plants to overcome the process mentioned in (i).

e) Explain the term ‘Guttation’.


Give the equivalent term for the following:

The condition in which the cell contents are shrunken.


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.

 Give suitable biological reasons for the following statement: 
Root hairs become flaccid and droop when excess fertilizers are added to the moist soil around them. 


Deplasmolysis occurs when a plasmolysed cell is placed in ______.


The hydrostatic pressure of the cell sap on the cell wall is called ______.


Give the equivalent term for the following:

Pressure exerted by the cell contents on the cell wall.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×