Psilotum are most closely related to

A) angiosperms.
B) gymnosperms.
C) conifers.
D) green algae.
E) ferns.

Psilotum

A genus of fern-like plants belonging to the whisk fern family (Psilotaceae), known for lacking true roots and leaves.

Angiosperms

A large group of flowering plants that develop seeds within an enclosed ovary.

Gymnosperms

A group of seed-producing plants that includes conifers, cycads, Ginkgo, and gnetophytes, characterized by seeds that are not enclosed by a fruit.