The first vascular plants had a pteridophyte life cycle. Ferns are the most common pteridophytes today. Lycophytes, horsetails, and whisk ferns are also pteriodphytes. I. Vascular plants evolved in the Late Silurian. The first vascular plants had a pteridophyte life cycle.
Ferns are the most common pteridophytes today.
Lycophytes, horsetails, and whisk ferns are also pteridophytes. Describe the external morphology and internal anatomy of a rhyniophyte. Describe the external morphology and internal anatomy of a typical fern stem. Explain the difference between a eusporangium and a leptosporangium. Describe the phyllotaxy in a horsetail.