復活草又稱耶利哥玫瑰(Rose of Jericho),係一種遇水會重生嘅沙漠植物。係炎熱乾燥嘅沙漠,莖部會蜷縮為球狀,由原本的翠綠色變為啡色,猶如枯死一樣 (“休眠”狀態)。而復活草神奇之處係只要一掂到水,就會完全復甦!其體內的豐富醣基海藻糖就會發揮強大的鎖水能力,鎖住相當於自身細胞重量460倍的水分,抓緊每一滴水分,如起「死」回生般重現翠綠色,恢復生機。
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