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  • 荷花

    六一儿童网儿童动画幼儿教育教育百科

    荷花:

    • 发布时间: 2019-08-16 14:32
      所属类别: 教育百科
      介绍: 这天,嘟拉和妈妈去荷塘赏荷。放眼望去,满塘的荷花,嘟拉兴奋地跑到荷塘边,仔细观察起荷花。
      嘟拉:妈妈,我看到的花儿都是长在地上,为什么荷花是长在水里的呢?
      妈妈:因为荷花是水生植物啊,植物学家管荷花叫窃根水生花卉。你喜欢吃的莲藕就是荷花长在池塘底下泥巴里的径呢。
      嘟拉:哦,妈妈,我知道,莲藕就是那个有很多洞洞的菜。为什么莲藕要长洞洞泥?
      妈妈:这些洞洞呀,是荷花为了适应水中生活形成的气腔,荷叶柄、荷花梗上都有。为了更好在水中生活,荷花不仅有气腔,还有很多运输水分的小管道呢。切藕的时候那些扯不断的长丝就是小管道上的纤维素。
      嘟拉:可是,妈妈,这些既然是荷花,那为什么不叫荷藕要叫莲藕呢?
      妈妈:因为荷花的另一个名字就叫莲花呀。
      嘟拉:原来是这样啊。
      妈妈:你看,荷花谢了那个膨大的花托叫莲蓬。莲蓬上有二三十个小房子,每个房子里住着一个莲子,莲子里面还有莲芯。
      嘟拉:妈妈,为什么荷叶上的水珠滚来滚去都不会掉下呢?
      妈妈:这是因为荷叶的叶面上长满了很小很小的钝刺,还铺满了蜡质白粉,所以雨水在叶子上沾不住,就成形成了圆圆的水珠,而叶子四周高,中间低,所以水珠滚来滚去也就掉不下去了。

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