Question

(a) Write the names and one function of each of any three growth hormones in plants.
(b) In the absence of muscle cells, how do plant cells show movement.

Answer 1

(i) Three growth hormones in plants are :
(a) Auxin : It is synthesised in the young tip of roots and shoots. It promotes elongation and division of cell and root formation.
(b) Gibberellins : They help in the growth of the stem.
(c) Cytokinins : They promote cell division and delay leaf ageing.