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我们知道,大多数植物会向着太阳生长.为什么会出现这种现象呢?这其中大有文章.下面我们以向日葵为例来说说其中的道理吧.向日葵是向阳类植物中最有代表性的,它体内会产生一种奇特的生长激素.清晨,旭日东升,向日葵受到体内生长激素的影响,花盘会向着太阳.向日葵花盘下茎干里的生长激素集中在西面背光一侧,并且刺激背光一侧的细胞快速繁殖.于是背光一侧的枝干就比向光一侧长得快,整个花盘会朝着太阳的方向弯曲.随着太阳在空中移动,植物生长素也在茎里背着阳光移动,好像是跟太阳捉迷藏似的,促使
We know that most plants will grow towards the sun.Why do we see this phenomenon? There is a great deal of an article here, let’s take the sunflower as an example.For the sunflower is the most representative , It will produce a strange growth hormone in the body.Early morning, rising sun, sunflower growth hormone by the body, the disk will be toward the sun.Flower sunflower sunflower stem under the growth hormone in the western side of the backlight, and stimulate the backlight The cells on one side propagate rapidly, and the branches on one side of the backlight grow faster than the one on the light side, and the entire faceplate curves in the direction of the sun.As the sun moves in the air, auxins carry sunshine in the stem Move, it seems to be hide-and-seek with the sun, prompting