Pteridophyta is a term used in scientific classification for a group of plants that does not bear seeds or flowers. They reproduce by spores, and their leaves are commonly known as fronds. Synonyms for Pteridophyta include "fern plants," "pteridophytes," "ferns," and "pteridophyte plants." These synonyms are often used interchangeably to refer to the same plant group. While fern plants have been around since prehistoric times and have evolved significantly, they remain an essential part of the planet's ecosystem. Some ferns are grown for their ornamental value, while others have medicinal properties and are used in traditional medicine.