Question

What is chemotropism ? Give one example. Name any two plant hormones and mention their functions.

Answer 1

To the response of chemical stimuli the growth movement in plants takes place is known as chemotropism.

Example: The pollen tube growth towards the ovule in the ovary.

Plant hormones are:-

(¡) Auxin-It helps the cells to grow longer and mainly present at the shoot tip.

(¡¡) Cytokinin-It promotes the cell division and present on root apices, in developing shoot buds etc.