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CYK Lesson 38

1. Outline the wide diversity in the plant kingdom as exemplified by the structural differenes between bryophytes, filicinophytes, coniferophytes, and angiospermiophytes.

The wide variety of plants can easily be differentiated by the structural differences between the four categories of plants. Bryophytes have no roots, but they have something similar to roots called rhiziods. Mosses have simple leaves and stems and liverworts have a flat thallus. Filicinophytes have roots. They also have leaves and short non-woody stems. The leafs are usually curled up in a bud and are usually divided into pairs of leaflets. Coniferophytes are shrubs or trees that have roots, leaves, and woody stems. The leaves are usually narrow and have a thick cuitcle. Angiospermiophytes are flowering plants, they vary, but mostly they have roots, stems, and leaves. The stems that develop into shrubs and trees are woody.