Exam 21: The Seedless Vascular Plants: Ferns and Their Relatives

Ferns are distinguished from their relatives by having megaphylls.

Whisk ferns produce sporangia on the upper surface of leaf-like flaps of tissue called _________.

Which of the following is considered to be a likely ancestor of the club mosses?

Equisetum belongs to a group of plants called "pig tails".

Uncompressed rocklike fossils in which the original cell structure has been preserved are

Living spike mosses and quillworts produce ______________, a reproductive feature referred to as ________.

Quillworts have no stems.

A favorite growing medium for orchid growers comes from

Ferns and fern allies are larger than the bryophytes because ferns and fern allies have water and food conducting systems.

Air tubes located between the ribs of horsetail (Equisetum)stems are called

Many seedless vascular plants have underground horizontal stems from which aerial shoots arise.

Which pair of plants is placed in the same phylum?

A fundamental distinction between club mosses (Lycopodium)and spike mosses (Selaginella)involves differences in their

Ancient relatives of both club mosses and horsetails were large and treelike.

The fern gametophyte is typically _____________________.

One of the significant adaptations to prevent drying out in the land environment was the development by vascular plants of (a)

In the bryophytes the _________________ plant persists in the seedless vascular plants it is the ____________ plant that predominates.

The antheridia of ferns are usually located

Lycopod sporangia are produced on the upper surface of modified leaves called

A petrifaction is a fossil in which the preserved organism is found in an unaltered state.