BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Generally speaking, gibberellins work as growth accelerators, causing cell stretching and cell division. They ensure that seeds germinate and that flowers form in plants that need long days. Gibberellin is often used in the cultivation of fruit to help unfertilised pears and apples to mature fully.

Detailed explanation-2: -Auxins are a powerful growth hormone produced naturally by plants. They are found in shoot and root tips and promote cell division, stem and root growth.

Detailed explanation-3: -Auxin hormone increases the rate of growth in a stem but it decreases the rate of growth in a root.

Detailed explanation-4: -Answer: Auxin is a plant growth hormone that can be created chemically or produced biologically by the plant. In biological synthesis, the natural hormone is represented by the symbol IAA, standing for indoleacetic acid.

Detailed explanation-5: -Auxin is a key regulator of plant growth and development, orchestrating cell division, elongation and differentiation, embryonic development, root and stem tropisms, apical dominance, and transition to flowering.