二)趋性axis(p. taxes. An orientated movement of an organism Taxes can be divided into positive taxis and negative taxis by the movement being directl towards or away from the stimulus分为正趋性 负趋性 1、趋光性 phototaxis( (light 飞蛾投灯 light trapping 黑光灯诱虫 蚜虫:黄色光 一蝴蝶:橙、红、黄⚫ （二）趋性Taxis (pl. taxes): An orientated movement of an organism. – Taxes can be divided into positive taxis and negative taxis by the movement being directly towards or away from the stimulus.分为正趋性、 负趋性 ⚫ 1、趋光性phototaxis (light) – 飞蛾投灯light trapping – 黑光灯诱虫 – 蚜虫：黄色光 – 蝴蝶：橙、红、黄