奥妙神奇的大自然创造了丰富多彩的生物 ,而生物界最普遍、最引人注意的现象之一就是雌雄性别。大多数生物特别是高等动物雌雄间的差异非常明显 ,这种差异表现在许多外部形态特征及内部生理结构上。在植物界 ,雌雄性别的差异不像动物那样明显 ,雌株和雄株的差异多表现在花的结 The magical nature creates a variety of creatures, and one of the most common and noticeable phenomena in the biological world is male and female sex. The difference between male and female in most organisms, especially higher animals, is very obvious. This difference is manifested in many external morphological features and internal physiological structures. In the plant kingdom, the sex difference between male and female is not as obvious as that of animals. Differences between female and male plants are mostly manifested in floral knots.