BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Hormones in plants called phytohormones are secreted by cells in them. Examples of phytohormones include auxin, cytokinin etc.

Detailed explanation-2: -Hormones are special chemical messengers molecules that help organisms, including plants, respond to stimuli in their environment. Ethylene is an unusual plant hormone because it is a gas.

Detailed explanation-3: -Hormones in plants A plant’s sensory response to external stimuli relies on chemical messengers (hormones). Plant hormones affect all aspects of plant life, from flowering to fruit setting and maturation, and from phototropism to leaf fall.

Detailed explanation-4: -Plant hormones control all aspects of plant growth and development, from embryogenesis, the regulation of organ size, pathogen defense, stress tolerance and through to reproductive development.

Detailed explanation-5: -There are five groups of plant-growth-regulating compounds: auxin, gibberellin (GA), cytokinin, ethylene, and abscisic acid (ABA). For the most part, each group contains both naturally occurring hormones and synthetic substances.