Seedless Vascular Plants

Flashcards covering key concepts and terms related to seedless vascular plants based on the lecture notes.

The common term for all land plants is __.

Embryophytes

The evolutionary origin of vascular plants occurred around __ years ago.

425 million years ago

Bryophytes are characterized by a free living __ that is the dominant generation.

gametophyte

The two major types of leaves in vascular plants are __ and megaphylls.

microphylls

In the evolution of vascular plants, lignin synthesis allows for __ on land.

vertical support

The __ is a central cylinder of tissue composed of primary vascular tissue.

stele

The three types of steles found in vascular plants are __, siphonostele, and eustele.

protostele

Homosporous plants produce __ kind of spore as a result of meiosis.

one

The sporophyte generation of ferns is __ and independent from the gametophyte.

dominant

Microphylls are characteristic of __ and are associated with protosteles.

lycophytes

Heterosporous plants produce __ types of spores in two different kinds of sporangia.

two

The Phylum Monilophyta includes __ and fern allies.

ferns

The evolutionary trend in gametophyte evolution is toward __, simpler structures.

smaller

The __ type of stele is mostly found in seed plants and evolved directly from protostele.

eustele

In Selaginellaceae, the type of spore produced in megasporangia is __, while in microsporangia it is __.

megaspores; microspores

An example of a plant with true leaves that are megaphylls is __ .

ferns

The gametophyte of true ferns develops from a __.

spore