植物的“眼睛”在哪里?
How plants see
Received date: 2018-03-13
Online published: 2018-12-21
地球上的生命经过漫长的演化,形成了目前的动物和植物。通常,动物可利用眼睛感知光线,然后将光信号转换为电脉冲传送到大脑来解释所看见的东西。此外,动物还能根据环境的变化和自身的需求自主移动。植物的生长发育和生活方式与动物存在显著差别,它们没有眼睛和大脑,终生固着在一个地方生活而不能自主移动。然而,植物拥有自己的优势。它们生命力旺盛,繁殖力超强,可拥有动物难以企及、高达几千甚至几万年的超长寿命。除了使地球丰富多彩以外,植物还为动物提供赖以生存的食物。植物虽然不会动,却也能洞悉世间万象变化,并且不同植物之间还存在着竞争与合作。更神奇的是,植物虽然没有眼睛,但也能看见光,甚至能看见我们人类眼睛看不到的光,并对不同的光照周期作出反应。
邓兴旺 . 植物的“眼睛”在哪里?[J]. 自然杂志, 2018 , 40(6) : 391 -399 . DOI: 10.3969/j.issn.0253-9608.2018.06.001
Animals and plants were formed in their present states during the long-term evolution of life on the earth. Generally, animals can perceive light by their eyes, and then convert the information from the light to electrical impulses for their brains to interpret what they have seen and how to react. Furthermore, animals can move autonomously according to the changed environments or to their own requirement. Plants are distinct from animals in their development and their lifestyle, they do not have eyes and brain, and they live in one place throughout the life without the ability to move by themselves. However, plants have their own advantages. They have exuberant vitality and strong fertility, and can live up to several thousand even tens of thousands years, which is never achieved for animals. Besides making the earth rich and colorful, plants also provide food for animal life. Although they can not move, plant can make sense of the
complex world, and there are competition and cooperation between different plant species. Magically, without eyes, plant can also see the light including those wavelength of light which we can not see, and can response to different light period.
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