BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Plant hormones act by directly affecting the activities of . Signal transduction membranes. (Plant hormones act by de/activating signal transduction pathways, which, in turn, can affect membranes, enzymes, and genes.)

Detailed explanation-2: -Plant hormones are regulators of almost all aspects of plant development and plant responses to their environment. Active at very low concentrations, with tight spatial regulation of synthesis and response, many plant hormones have key roles in the interactions between plants and beneficial microbes.

Detailed explanation-3: -Plant hormones affect seed germination and dormancy by acting on different parts of the seed such as [35] found that the inhibitors in seeds of peach were at least one of the factors controlling in germination by preventing or retarding cell division of the radical.

Detailed explanation-4: -Chemical Structures of the Plant Hormones Ethylene gas promotes fruit ripening, senescence, and responses to pathogens and abiotic stresses. IAA (an auxin) regulates cell division and expansion, vascular differentiation, lateral root development, and apical dominance.