论文部分内容阅读
植物开花不仅仅是为了让我们观赏。花能制造花粉,一朵花的花粉被带到另一朵同类花的柱头上就叫做授粉,花粉的作用是生成种子。有的花利用风来传播花粉,有的花借助前来拜访的动物为花授粉,例如昆虫。动物被花鲜艳的色彩和浓烈的香气所吸引,前来采集花蜜——花蕊中分泌出来的有甜味的液体。落在花上的动物身上粘着花粉,再带到另一朵花上。动物给花授粉时,往往忙得不亦乐乎,顾不上是不是有人在看,所以你没准能非常近距离地观察它们。
Plants flowering is not just for us to watch. Flowers can make pollen. The pollen of one flower is taken to the stigma of another flower of the same kind. Pollen is used to produce seeds. Some flowers use the wind to spread the pollen, and some flowers pollinate the flowers with the animals they come to visit, such as insects. The animals were attracted by the bright colors and intense aroma, coming to collect the sweet liquid secreted by nectar-stamens. The animal that landed on the flower stuck the pollen and brought it to another flower. When animals give flowers pollination, they are often overwhelmed, whether or not they are watching, so you are not likely to observe them very closely.