PAPER Topics

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Plant, any member of the plant kingdom, comprising about 260,000 known species of mosses, liverworts, ferns, herbaceous and woody , bushes, vines, trees, and various other forms that mantle the earth and are also found in its waters. range in ....

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... its' more than 3 billion years of carrying out photosynthesis. Today the world's biomass is composed overwhelmingly of plants, which not only underpin all food webs but also modify climates and create and hold down soil, making what would otherwise be stony, sandy masses habitable for life. Cell Structure and Function The tremendous variety of plant species is, in part, a reflection of the many distinct cell types that make up individual plants. Fundamental similarities exist among all these cell types, however, and these similarities indicate the common origin and the interrelationships of the different plant species. Each indi ...