What are the structural features of ferns?

Ferns are higher plants. This means that they have various tissues and organs in their structure. Ferns have been living on our planet for hundreds of millions of years. Due to their high adaptability, they have survived to this day. They are spread through spores. Spores are formed in special capsules on the leaves. After the spores mature, the bolls open and the spores fly long distances from the plant. It is believed that there were ferns that had seeds, but their fossils have not been found.