The following points highlight the three classes of Pteridophytes. The classes are: 1. Psilopsida 2. Lycopsida 3. Sphenopsida. Pteridophytes: Class # 1. Psilopsida (Psilophytes): They are the most primitive vascular plants. Roots are absent. Instead rhizoids occur. Stem is dichotomously branched. It has two parts, aerial and rhizomatous. Aerial stems are green and photosynthetic. Leaves […]
Classes of Pteridophytes: 3 Classes | Plant Kingdom
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