Q. Which are the common ancestors of seed fern from the below figure?


Dear student,
According to the diagram, seed ferns are closely related to progymnosperms. Both of them belongs to the paleozoic era. The earliest seed plants emerged in the Devonian, and have been called progymnosperms. Their fossils show vegetative morphologies to gymnosperms: They were shrubs or trees with laminate leaves but reproduced by spores like ferns. Archaeopteris, a type of progymnosperms are considered to be the ancestor of seed plants.


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Cholrophyte as from it only all the type of plants are formed
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