Crossword clues for auxins
The Collaborative International Dictionary
Hormone \Hor"mone\ (h[^o]r"m[=o]n), n. [From Gr. "orma`ein to excite.]
(Physiological Chem.) A chemical substance formed in one organ and carried in the circulation to another organ on which it exerts a specific effect on cells at a distance from the producing cells; thus, pituitary hormones produced in the brain may have effects on cells in distant parts of the body..
(Physiological Chem.) a chemical substance, whether natural or synthetic, that functions like a hormone in a living organism. Thus, synthetic steroid hormones may be more effective than their natural counterparts.
(Bot.) A substance that controls growth rate or differentiation in plants; also called phytohormone. The most well-known are the auxins that stimulate growth at the growing tips of plants, and control root formation and the dropping of leaves; and the gibberellins, which are used in agriculture to promote plant growth.
Wiktionary
n. (plural of auxin English)
Usage examples of "auxins".
In the same way, auxins will concentrate on the lower side of a stem held horizontally, curving the tip upward.
Geotropism seems also to be mediated by auxins, but how the distribution of auxins can be affected by gravity is not yet understood.
The best-known of these auxins is a compound called indolyl-^-acetic acid, commonly abbreviated 7AA.
Many of the movements of plants are governed by the distribution of these auxins.
One of the most powerful of the auxins was discovered through studies of a plant disease.