傾けい性せい

noun

nasty; nastic movement

Botanical term for a plant's non-directional movement in response to a stimulus, such as the opening and closing of flowers. Contrast with 屈性 (tropism), which is directional.

See also: 屈性

• チューリップの花はなの開かい閉へいは傾けい性せいの一いち例れいだ。

  The opening and closing of tulip flowers is an example of nastic movement.

• 傾けい性せいは刺し激げきの方ほう向こうに依い存ぞんしない植しょく物ぶつの運うん動どうである。

  Nastic movement is a plant movement that does not depend on the direction of the stimulus.