Question

Give reason for the following: (a) Meristematic cells possess a prominent nucleus and dense cytoplasm but are devoid of vacuoles. (b) Plants like cacti have thick epidermis. (c) Chewing a pear fruit gives a crunchy and granular sensation. (d) It is challenging to remove the husk from a coconut. (e) Bones are strong and non-flexible.

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.

Cell wall of which one of these is not made up of cellulose?

Why is endocytosis found in animals only?

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.