Mention any therr characterstic features of phytohormones.

Explanation

(i) Usually preduced in tips of roots, stems and leaves.
(ii) Transfer of hormones from one place to another takes part through condictive system.
(iii) They are required in trace quantities.
(iv) All hormones are organic in nature.
(v) There are no specialized cells or organs for their secretion.
(vi) They are capable of influencing physiological activities leading to promotion, inhibition and modification of growth.