If cells of Onion peel and RBC are separately kept in hypotonic solution

Question:

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) $\mathrm{a}$ and $\mathrm{b}$ both are correct

(d) RBC and Onion peel cells will behave similarly.

Solution:

(b) RBC will burst as there is no mechanism to restrict entry of water into them. Onion peel cells do not burst. Endosmosis causes some initial swelling but cell wall puts a mechanical barrier to further swelling and entry of water. Therefore, they do not burst.

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