Tusomesasa.

State the functions of gibberellins as a plant growth hormone.(7marks)

Suggested resposponses

a.They stimulate inter nodal stem elongation and so increases the height of the plant;

b. In the presence of auxins, they stimulates cell division and cell elongation;

c. They break the seed dormancy and induce germination of seeds;

d. During germination they mobilize stored foods for the development of the embryo;

e. They induce...