What will happen to onion peel cells when you put few drops of concentrated salt solution on the prepared slide of onion peel? Give reason.

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Solution

Changes due to concentrated salt water:
As the concentrated salt solution is introduced, the cells of onion peel are subjected to a hypertonic solution in the surrounding.
The concentrated salt solution is hypertonic as it has a higher salt concentration compared to the salt concentration of the onion peel cells,
This is why the water moves towards the outside till an equilibrium concentration is reached.
The process because of which water moves towards the outside is called exosmosis.

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In brief state what happens when-

A. Red blood cell is kept in concentrated saline solution.

B. Cells of onion peel are kept in hypotonic solution.

Question 38
If cells of onion peel and RBC are separately kept in hypotonic solution, what among the following will take place? Explain the reason for your answer.

(a) Both the cells will swell.
(b) RBC will burst easily while cells of onion peel will resist the bursting to some extent.
(c) a and b both are correct.
(d) RBC and onion peel cells will behave similarly.

If cells of onion peel and RBC are separately kept in hyportonh solution,what among the following will take place? Explain the reason for your answer.

A both the cells will swell

B rbc will burst easily while cells of onion peel will resist the bursting to some extent.

C a and b both are correct

Do RBC and onion peel cells will behave similarly

Q. While preparing a slide for observing onion peel under a microscope, the onion peel is immediately kept in a watch-glass containing a drop of water. Why this is done?

Q. What is the use of glycerine in preparation of slide of onion peel?

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