BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Cytokinin is a plant hormone. Insulin is an animal hormone. Oestrogen is an animal hormone. Cytokinins promote cell division, and are present in greater concentration in areas of rapid cell division, such as in fruits and seeds.

Detailed explanation-2: -There are five groups of plant-growth-regulating compounds: auxin, gibberellin (GA), cytokinin, ethylene, and abscisic acid (ABA).

Detailed explanation-3: -According to structural and chemical diversity, plant hormones are grouped into several classes, including auxins, cytokinins (CKs), abscisic acid (ABA), gibberellins (GAs), ethylene, jasmonic acid (JA), salicylic acid (SA), brassinosteroids (BRs), and strigolactones (SLs).

Detailed explanation-4: -Plant hormones regulate plant growth, development, reproductive processes, longevity, and death. Six main types: Auxins, abscisic acid, cytokinins, ethylene gibberellin, and brassinosteroids.