Question

Vacuole in a plant cell:

• A. Lacks membrane and contains air
• B. Lacks membrane and contains water and excretory substances
• C. Is membrane-bound and contains storage proteins and lipids
• D. Is membrane-bound and contains water and excretory substances

Answer 1

The correct option is D Is membrane-bound and contains water and excretory substances

Vacuole in a plant cell is bound by a membrane called tonoplast. Hence, all answers containing "lacks membrane" are incorrect.
Plant vacuoles are involved in storing excretory substances and water. However, storage lipids are not stored in vacuoles in plants. Storage lipids are usually present in seeds and pollen grains.