Chapter 12 Flashcards
Chemical coordination in plants (7 cards)
Tropism
growth of plant in response to directional stimulus
Phototropism
growth movement of plant in response to directional light stimulus
Geotropism
growth movement of plant in response to directional gravitational stimulus
Coleoptile
protective sheath of first cereal seedling leaves, used in tropism experiments
Hormone
chemical messenger in blood (animals) chemical messenger affecting growth (plants)
Auxin
plant hormone involved in tropisms and other growth responses
Plant growth substances
‘hormones’, affect various plant growth aspects