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10 Cards in this Set

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  • Back
fern
the most common seedless vascular plant living today, belonging to the pterophyte group. There are about 12,000 species of ferns in existence today, and they are found in tropical and temperate regions.
heterosporous
a life cycle that is characterized by two types of haploid spores (male and female).
homosporous
life cycle which is characterized by only one type of haploid spore
horsetail:
a mostly extinct group of seedless vascular plants, with one living member, a homosporous plant.
lignin
is embedded in plant cell walls between the cellulose matrix, and it is a very stable molecule that does not break down easily
lycophyte
seedless vascular plants which appeared during the Devonian period, but split into two lines during the Carboniferous period.
megaspore
develop into haploid female gametophytes
microspore
develop into haploid male gametophytes
phloem
transports the sugars made during photosynthesis down to the plant’s roots for energy.
xylem
primarily the vasculature where water and minerals travel from the roots up the stems to the various parts of the plant