Question

Part of plant used for culturing is called:

• A. Scion
• B. Explant
• C. Stock
• D. Callus

Answer 1

The correct option is B Explant

A piece of young stem or bud which is inserted into a rootstock is called scion.

Tissue culture is a biological technique which involves the development of the plant by the totipotent cells under the controlled condition on a nutrient culture medium of the known composition. The totipotent cells are taken from the active part of the plant like root, stem leaf, pollen etc. The plant part which is used for the culture is known as explant.

A rooted stem into which a scion or a bud is grafted is called a stock.

Callus is unorganized actively dividing the mass of cells maintained in culture. It has a meristematic cell which has ample amount of cytoplasm to trigger cell division. It is treated with the growth hormones to allow the cell division and differentiation.

So, the correct answer is option B.