19. Plasma membrane controls

(a)  Passage of water

(b)  Passage of water and some solutes in and out of the cell

(c)   Passage of water and solutes into the cell

(d)  Movements of the cell contents out of the cell

Ans.        (b)  Plasma membrane shows selectively permeable membrane hence it controls passage of water and some solutes in and out of the cell.

(19)