关于植物的10个冷知识，你知道多少

植物图片 2019-03-26 13:43

这个世界上稀奇古怪的事物有很多，特别是一些比较冷门的植物知识，虽然平时用处不是很大，但万一哪天天遇到的了呢，所以了解一下准没错的。

关于植物的10个冷知识

植物小知识

1、油漆过敏的人不能吃芒果

芒果

芒果属于漆树科植物，含有单羟基苯或二羟基苯成分，和平时油漆中所含的成分有些类似，当对油漆过敏的人吃了芒果后这些物质就会对他造成刺激作用，特别容易引起过敏。

2、蚊子不喜欢的植物

蚊子不喜欢的植物

天竺葵科植物蚊净香草能散发出清新淡雅的柠檬香味，在室内有很好的驱蚊效果，且气温越高，驱蚊效果越好。驱蚊植物还有除虫菊、七里香、逐蝇梅、薄荷、熏衣草、艾叶、夜来香、茉莉花等。但是，为了不影响睡眠，最好别在卧房里放置气味强烈的盆栽植物。

3、野外迷路，能从植物身上得到哪些提示

迷失方向看树

如果树木不是生长得很浓密，通常可从树干上分辨南北：光滑的一面是南，另一面是北。由树叶生长的方向辨别，通常叶面所朝的方向为南面。由树木的年轮辨别，年轮距离较宽的一方即为阳光充分、能使树木生长良好的南方。还可由石头或树根的青苔辨别，青苔喜欢生长于潮湿的地方，即背阳处，而其反向即为向阳的南方。如果树木浓密的话，通常蚁穴洞口对着的方向为南。

 

4、花开有声音吗

花开的声音

声音的本质是震动，花朵开放可以产生震动，因此是有声音的，但是这种声音我们人类很难听见。如果你想亲耳听的话，据说雨后的竹子一天能涨40cm高，坐在边上肯定能听到声音。

5、为什么触摸会使植物长不高

触摸会使植物长不高

20世纪40年代，一位叫Franksalisbury的科学家发现自己量的叶子都比别的叶子短！原来是由于测量的时候，和叶子有接触使叶子变短了。后来又有一个一种拟南芥的实验，结果非常明显，经常被摸的幼苗比对照组矮了一大截！

由于植物有一种叫Thigmomorphogenesis的机制，而这个机制和Calmodulin蛋白有关，这个蛋白和钙离子会控制生长基因的表达。在进化上也比较容易说得通：经常被碰的区域的确应该避而远之。【PS：以后人家再说你咋长不高时，你可以用这篇文章甩他一脸！】

6、为什么落叶多是背面向上

落叶

树叶的正面细胞排列整齐、紧密，包含着许多叶绿体，称为栅栏组织。而背面细胞内叶绿体少，排列疏松，称为海绵组织，它比正面轻。正面重于背面，所以树叶飘落向大地的时候，大多数就会背面向上。

7、无花果真的不开花吗

无花果

无花果是开花的。它的花在总轴上，这个总花轴的顶端向下凹进去，长成一个肥厚的肉质空心圆球，球顶有一个未封死的小孔。用刀把圆球切开，在空腔周缘的上端可以看到许多小雄花，下端有小雌花，无花果靠虫媒传粉，在开花的季节，有一种虫子从小孔钻进去帮助它传粉。

8、植物也有生物钟

植物也有生物钟

植物和人类一样是有生物钟的，比如植物的开花时间和叶子的睡眠行为就是由植物生物钟支配的，还有植物的呼吸、光合作用、生长速度等多种多样的生理行为都是又生物钟控制的。

9、会发光的植物

会发光的植物

由于植物体内有大量磷，当磷和空气接触时，就会发出冷光，如非洲北部的“夜光树”、古巴的“夜皇后花”、我国井冈山地域的“灯笼树”。这种磷光的亮度和树的大小成正比。

10、为什么霜降之后的青菜比较好吃

霜降后的青菜

有些青菜在霜降的时候为了抵御寒冷，会将淀粉类物质转化成糖类，所以霜降过后的青菜会比较甜。

通过以上文章我们了解到了关于植物的10个冷知识，如果你还想了解更多有趣的植物知识，请关注植物之家公众号~

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