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Question
Give reasons for the following:
If you sprinkle some common salt on grass growing on a lawn, it is killed at that spot.
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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.
RELATED QUESTIONS
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:
- Humid conditions?
- Windy conditions?
d) Mention any three adaptations found in plants to overcome the process mentioned in (i).
e) Explain the term ‘Guttation’.
The state of a cell in which the cell wall is rigid and stretched by the increase in volume due to the absorption of water is called.
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.
What is the difference between ‘flaccid’ and ‘turgid’? Give one example of flaccid condition in plants.
Give Technical Term for the following.
The pressure exerted by cell contents on a plant cell wall.
Name the following:
The condition in which the contents of a cell exert pressure against the cell wall making it distended.
Multiple Choice Question:
When cell is fully turgid, which of the following will be zero?
Excessive use of fertilisers in agricultural fields reduces the yield of crops. Justify the statement.
Give the equivalent term for the following:
Pressure exerted by the cell contents on the cell wall.
