Question

Gibberellins promote

• A. seed germination
• B. seed dormancy
• C. leaf fall
• D. root elongation.

Answer 1

The Correct Option is A

Gibberellins promote seed germination. Giberellins are weakly acidic growth hormones having ring structure and which cause cell elongation of intact plants in general and increased internodal length of genetically dwarfed plants. Giberellins are synthesized in the apical shoot buds, root tips and developing seeds. During seed germination, especially of cereals giberrellin stimulates the production of some messenger RNAs and then hydrolytic enzymes like amylases, lipases, proteases. The enzymes solubilize the reserve food of the seed.

Answer 2

Gibberellins are primarily considered as the plant hormones that perform various development processes in plants, including seed germination, stem elongation, dormancy, flower development, etc. They are also considered one of the longest classes of plant hormones. Gibberellins are the diterpenoid acids that are to be produced by terpenoid pathways that are found in plastids. They are also involved in the natural process of breaking dormancy and other various aspects of germination. It also performs the task of a chemical messenger, and they are produced in great mass whenever the plant is exposed to cold temperatures. Gibberellins are plant hormones that play a crucial role in regulating plant growth and development, including seed germination. These hormones bind to specific receptors, and the resulting signalling cascade may involve calcium and protein activation, leading to the production of enzymes that promote the growth and development of the embryo. 

Therefore, the correct answer is option A. i.e., Seed Germination.