Question

give four classes of pteridophytes. with one example. ​

Answer 1

1-Psilopsida- are the most primitive vascular plants in which roots are absent and rhizoids occur instead of roots. ...

2-Lycopsida- are vascular plants which show differentiation of roots, stems and leaves. ...

3-Sphenopsida- are also known as horsetails. ...

4-Pteropsida- are also called ferns.

Answer 2

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