BIOMOLECULES AND ENZYMES

Detailed explanation-1: -GA Signaling in Dormancy and Seed Germination GA stimulates the seed germination whereas, ABA is involved in the establishment and maintenance of dormancy. GA exerts its influence in two manners, first by increasing the growth potential of embryo and second by inducing hydrolytic enzymes.

Detailed explanation-2: -Gibberellins are utilized by the farmers to speed up the germination of seeds and to stimulate cell and stem elongation. These are applied externally to increase crop production.

Detailed explanation-3: -Auxin is required for ABA-mediated inhibition of seed germination.

Detailed explanation-4: -Gibberellins (GAs) affect flowering in a species-dependent manner: in long-day and biennial plants they promote flowering, whereas in other plants, including fruit trees, they inhibit it.