What the advanced characteristics of subphylum filicinophyta?

The advanced characteristics of subphylum Filicinophyta, also known as ferns, include well-developed vascular tissues for conducting water and nutrients, a dominant sporophyte generation, and typically large leaves called fronds. They also have specialized structures like indusia and sporangia that produce spores for reproduction. Additionally, ferns exhibit heterosporous reproduction, where they produce two different types of spores - microspores and megaspores.