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Without a vascular system, mosses, and liverworts cannot grow very large. If you have seen mosses, you know that they are actually carpets of individual plants. They are rarely taller than one inch high. Another important characteristic of these little guys is that they require water to reproduce. It's another characteristic of their low place in plant evolution. While all plants need water, mosses and bryophytes need droplets of water to enable their haploid reproductive cells to combine. They are all known as the bryophytes

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9y ago

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