论文部分内容阅读
人们形容美好的事物,往往用“如花似锦”、“花团锦簇”一类漂亮词句。花,诚然是美好、欢乐和幸福的象征。但是,你可知道有关花的构造和开花授粉的知识吗?! 花是叶的变态。种子植物都要开花,没有花就没有果实,就是无花果也开有许多小花,只不过它们被包在花轴里人们轻易看不到罢了。多数植物的花是由花托、花萼、花瓣、雄蕊、雌蕊组成。五部分俱全的称完全花,如桃、杏、油菜等。不足五部分的称不完全花,只有花萼没有花瓣的叫单被花,如养麦;花
People describe beautiful things, often with “flowers”, “flowers” a class of beautiful words. Flowers, of course, are a symbol of beauty, joy and happiness. But can you know about the structure of flowers and knowledge about pollination ?! Flowers are the metamorphosis of leaves. The seed plants are to flowering. Without the flowers, there are no fruits. There are many small flowers in the figs, but they can not be easily seen in the flower axles. The flowers of most plants are composed of torus, calyx, petals, stamens, pistils. Five parts are complete, said flowers, such as peach, apricot, rape and so on. Less than five parts of the said incomplete flowers, only calyx no petals called single flowers, such as raising wheat; flowers