Chemotropism is the growth or movement of a plant or plant part in response to a chemical stimulus. In positive chemotropism, the movement is toward the chemical; in negative chemotropism movement is away from the chemical. An example occurs during pollination. The ovary releases sugars onto the style of the flower, and these act positively to cause pollen to produce a pollen tube that moves down the style.
Related category• BOTANY
Home • About • Copyright © The Worlds of David Darling • Encyclopedia of Alternative Energy • Contact