Banana plantations and coffee bushes are replaced by thorn trees and succulents. 香蕉园和咖啡灌木丛被荆棘树林和肉质植物所取代。
The stem serves to conduct water and food materials up and down the plant and, particularly in young plants and some succulents, it may serve as a photosynthetic organ. 茎可以将水分和养料在植物体内上下运输，特别是在幼小植物体和部分肉质植物中，还有进行光合作用的能力。
