向性
A directional growth movement of a part of a plant in response to a unilateral stimulus (Book 3, p.24)
植物的某部分對單側刺激作出方向性的生長運動。
Related terms: hydrotropism (向水性), phototropism (向光性), geotropism (向地性), auxins (生長素)
Pronunciation in English (listen with default application).

