Question

A cell from leaf is made to grow into complete plant under culture conditions. It shows cellular

• A. Cloning
• B. Totipotency
• C. Hybridisation
• D. All the above

Answer 1

The correct option is B Totipotency

Totipotency is the ability of the plant to generate new cell by cell division. A cell from leaf is made to grow into complete plant under culture conditions. The cell of the leaf used for the culture is taken from the tip of the leaf and it has ample amount of meristematic cell. The meristematic cell of the leaf is grown on a cultured media it develops into a undifferentiated mass of callus. The cells of callus have active nucleus and cytoplasm so they are totipotent. The totipotent cells of callus differentiate on treating with growth hormone. Callus when treated with auxin it promotes rooting and when it is treated with cytokinin it stimulates cell maturation, differentiation and finally, promotes the development of stem.

So, the correct answer is option B.