NEET BIOLOGY

Detailed explanation-1: -Auxin is produced in the apical meristem of the plant, whereas cytokinin is produced in the leaves. Auxins are responsible for apical dominance in vegetative growth, repressing cytokinin from activating dormant axillary (lateral) buds from growing new lateral shoots .

Detailed explanation-2: -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-3: -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.

Detailed explanation-4: -Auxin is produced in the cells of the apical meristem and is transported to various portions of tissues and cells around the apical meristem, signaling these cells to elongate.

Detailed explanation-5: -Five naturally occurring (endogenous) auxins in plants include indole-3-acetic acid, 4-chloroindole-3-acetic acid, phenylacetic acid, indole-3-butyric acid, and indole-3-propionic acid.