Question

A plant hormone used for inducing morpho-
genesis in plant tissue culture is
(a) gibberellins (b) cytokinins
(c) ethylene (d) abscisic acid

Answer 1

Answer:

d

Explanation:

a plant harmone used for introducing morpho-genesis in plant tissue culture is abscisic acid

Answer 2

Answer is option "b"

Explanation:

• Morphogenesis allows the organism to grow and take its shape by the process of cell division and differentiation. It is involved in inducing morphogenesis. Auxin and cytokinin are used in equal quantity in the growth media of callus it promotes shoot and root formation and finally leads to organogenesis.
• Cytokinin is basically used to promote cell division in roots and shoots. They help in cell growth and differentiation at the tip of root and shoot. The callus is an undifferentiated mass of cell which is produced at the initial stage of tissue culture which is inoculated by phytohormones like auxin and cytokinin the cells of callus differentiates into root and shoot.
• Hence, the right answer option b "cytokinins".