Question

The vacuoles are surrounded by a thin membrane called

(a) plasmodesmata

(b) hydathodes

(c) tonoplast

(d) both (b) and (c).

Answer 1

The correct option is: (c) tonoplast

Explanation:

Tonoplast is the inner plasma membrane enclosing vacuole. Chemically, it has protein (60 - 70%), lipids (20 - 40%) and carbohydrates (1 - 5%). It is selectively permeable like plasma membrane.