BIOMOLECULES AND ENZYMES

Detailed explanation-1: -All plants naturally possess hormones, including the growth hormone auxin, which is produced in immature parts of the plant, where growth is necessary. Synthetic auxins are used in hormone rooting powders and gels to replicate natural growth conditions in plants, and encourage roots to form.

Detailed explanation-2: -Auxins control many different aspects of growth and development, as is typical of plant hormones. For instance, they are known to influence the elongation of stems and leaves, the setting and ripening of fruits, and the growth in thickness of trees. They also stimulate the formation of new root tips in stem cuttings.

Detailed explanation-3: -Auxin Induces Transient Apoplastic Alkalization for Gravitropic Root Growth. Root gravitropism, the process in which root growth is aligned with the field of gravity, is one of the most prominent processes in which auxin-dependent growth responses immediately affect cellular elongation in the root.

Detailed explanation-4: -(ii) Plant hormone gibberellins help in growth of a stem.

Detailed explanation-5: -Auxin, a naturally occurring plant hormone, stimulates root formation. Several synthetic forms of auxin are sold as “rooting hormone.” Though some plants will root readily without treatment, application of rooting hormone to the base of the cutting will often improve your chance for success.