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Unformatted text preview: Vascular Plants Described The vascular plants encompass several divisions of plants and are collectively known as tracheophytes. Tracheophytes are characterized primarily by the presence of a vascular system composed of two types of specialized tissue: xylem and phloem. Xylem conducts water and minerals upward from the roots of a plant, while phloem transports sugars and other nutrients from the leaves to the other parts of the plant. Both xylem and phloem are distributed throughout the plant. The vascular tissue also serves as a means for mechanical support in the plant, so some tracheophytes (such as trees) can grow quite tall. Seedless vascular plants (ferns) In many plants, seeds are the structures from which the sporophyte generation emerges. Seeds protect the embryonic plant during its early stages and store food. Many plants do not form seeds in protect the embryonic plant during its early stages and store food....
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This note was uploaded on 11/11/2011 for the course BIO 101 taught by Professor Pesthy during the Fall '07 term at Texas State.
- Fall '07