In a tissue-culture lab, a scientist prepared somatic embryos of a banana. he wants to induce root development. which hormone type should he apply to achieve this?
a) cytokinins
b) gibberellins
c) ethylene

A) cytokinins

Explanation:

Cytokinins are the class of plant growth regulating hormones. Their function in plants is to promote the cell division and differentiation in plant shoots and roots. Therefore, they help in the elongation process of the plant from both ends roots as well as shoot. They cause the expansion of the cells of plants.

On the basis of the above description, cytokinins can be used to induce root development in the tissue culture.