Question

Expand the following

I) ABA

II) FSH

III) AIDS

IV) DDT

Answer 1

(i) Abscisic acid or ABA causes the closure of stomata, in order to reduce the rate of transpiration. It promotes abscission (leaf fall), the development of dormancy in buds.

(ii) Follicle stimulating hormone or FSH stimulates the ovary to produce oestrogen.
(iii) Acquired immunodeficiency syndrome (AIDS) is caused by HIV virus.
(iv) Dichloro diphenyl trichloroethane (DDT) is an insecticide used to kill insects.