Question

A thoroughly washed beetroot slice kept in water at room temperature does not lose anthocyanin pigment because plasma membrane is _______.

• A. Permeable to anthocyanin
• B. Impermeable to anthocyanin
• C. Selectively permeable to anthocyanin
• D. Dead

Answer 1

The correct option is B Impermeable to anthocyanin

B. Impermeable to anthocyanin

Reason : The plasma membrane of the cell is selectively permeable. When the beetroot slice is kept in cold water, anthocyanin is impermeable to the cell membrane because of its bulky structure. But if it is kept in hot water, the plasma membrane will get destabilized and the anthocyanin pigment will come out.

So, the correct option is B.