BI 102 Ferns and Allies: Seedless Vascular Plants

Flashcards covering the key terminologies and concepts from the lecture notes on seedless vascular plants.

Xylem

Plant tissue that conducts water and minerals, contains tracheary elements

Phloem

Plant tissue that conducts food (mainly sucrose), contains sieve elements

Microphylls

Small leaves that contain a single strand of vascular tissue.

Megaphylls

Large leaves that contain multiple strands of vascular tissue

Homosporous

Production of one type of spore from one kind of sporangium

Heterosporous

Production of two types of spores from two different kinds of sporangia.

Sporophyll

A modified leaf that bears sporangia

Sporangium

A structure that produces spores

Microsporangium

Produces microspores

Megasporangium

Produces megaspores

Microsporophyll

A modified leaf that bears microsporangia, a sporangium that produces microspores.

Megasporophyll

A modified leaf that bears megasporangia, a sporangium that produces megaspores

Strobilus

A reproductive structure consisting of nonphotosynthetic sporophylls; a cone (a collection of sporophylls).

Microstrobilus

A microsporangiate cone.

Megastrobilus

A megasporangiate cone

Protostele

A central core of xylem surrounded by a ring of phloem.

Siphonostele

A central pith is surrounded by a ring of xylem, which is, in turn, surrounded by a ring of phloem.

Enations

Green superficial leaflike, veinless photosynthetic tissues are spirally arranged along the stems.