Comparative study of the plant groups show that the bryophytes have forms more complex than the algae but they are less developed than the pteridophytes although there is a tendency of differentiation of the gametophytic body which is not found in the pteridophytes
Stem of gymnosperm is aerial.Stem of pteridophytes are mostly underground.Tree Ferns have long aerial stems but these are Pteridophytes. The real difference is that gymnosperms bear seeds pteridophytes are without seeds.
There are many plant groups that are classified under the kingdom Plantae. A few of the major groups include Gymnosperms, Bryophytes, Angiosperms, and Pteridophytes.
Selaginella and Dryopteris .
Pteridophytes or gymnosperms
Ferns belong to pteridophytes
equisetum
gymnosperms
ferns PTERIDOPHYTES
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375 mya
pteridophytes can crawled like a snake on the ground