Vascular plants have tissues that help transport water minerals and other substances important for plant nutrition. Such fabrics are xylem and phloem.
Already bryophytes are very small plants that live in moist and shady places. Their structures are very different structures of vascular plants. bryophytes have rhizoids which are similar structures roots cauloides which are similar to phylloid stems and leaves that resemble those of the other groups of plant structures.

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Bryophytes conducting vessels have no specialized for the transport of nutrients such as water. The transport is performed on these plants from cell to cell along the body of the plant. So bryophytes are always small and only grow in moist places.