Hormones are organic organic substances synthesized within a plant part; Translocated/transported to a target organ.
– it brings about a specific response in growth/development.
– may be stimulatory or inhibitory depending on concentration and plant part.
Vitamins are also synthesized within plant tissues
– they are nonspecific in action/no specific target organs
– But are required in small amount for healthy growth and development
– deficiency results in ill-effects/abnormal growth
– forms an important components of enzymes, coenzymes, etc. that are required for normal metabolism.