Question

Gibberellins promote
A. Seed dormancy
B. Leaf fall
C. Seed germination
D. Root elongation

Answer 1

Hint: Gibberellins promotes the process by which an organism develops into the new plants. Gibberellins regulate various developmental processes.

Complete answer:
Gibberellins are basically considered as plant hormones that perform various development processes in plants including seed germination, stem elongation, dormancy and flower development, etc. They are considered as one of the longest classes of plant hormones.
Gibberellins are diterpenoid acids that are produced by terpenoid pathways that are found in plastids. They are involved in the natural process of breaking dormancy and other various aspects of germination. It acts as a chemical messenger and they are produced in great mass when the plant is exposed to the cold temperature.
Gibberellins cause seed germination and its hormones bind to a receptor and the calcium activates the protein producing an enzyme to stimulate the growth in the embryo.

Thus, the correct answer is option C. i.e., Seed Germination.

Additional Information:
Dormancy is a period in a seed life cycle when the development, growth and various physical activity are temporarily stopped. This adversely minimizes metabolic activity which therefore, helps an organism to conserve energy. Leaf fall is the natural separation and dropping of the leaf at the end of the growing season. Root elongation is considered to be the result of the enlargement of new cells constantly.

Note: Gibberellins induce bolting and flowering under non-inductive conditions in many plants that require low temperature for flower initiation. The gibberellins are recognized as being an important group of plant hormones, regulating growth.