A Complete Collection of 100000 Whys
Fav十万个为什么
为什么有些植物能在沙漠生存？
1、植物进化出了特殊的根系，如深根或广根系统，以吸收尽可能多的水分。
2、它们拥有厚实的叶片或肉质茎，用于储存水分，减少水分蒸发。
3、许多沙漠植物具有蜡质或绒毛覆盖的叶片，以反射阳光并减少水分流失。
4、它们在极端高温下会进入休眠或半休眠状态，以降低新陈代谢和水分消耗。
5、一些沙漠植物能进行 CAM 光合作用，这种作用能在夜间吸收二氧化碳，白天关闭气孔减少水分蒸发。
总之，沙漠植物通过进化出多种适应机制，如水分储存、减少蒸发、休眠和特殊光合作用方式，来应对沙漠的极端环境。
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