Hormones

(From Greek hormao - I set in motion, I stimulate) biologically active substances produced by clusters of specialized plant cells and exerting targeted action on other organs and tissues. Under the control of hormones, all stages of an organism's development proceed from the moment of its inception to advanced old age, as do all major life processes.

(From Greek hormao - I set in motion, I stimulate) biologically active substances produced by clusters of specialized plant cells and exerting targeted action on other organs and tissues. Under the control of hormones, all stages of an organism's development proceed from the moment of its inception to advanced old age, as do all major life processes.