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10 Cards in this Set
- Front
- Back
fern
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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.
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heterosporous
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a life cycle that is characterized by two types of haploid spores (male and female).
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homosporous
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life cycle which is characterized by only one type of haploid spore
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horsetail:
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a mostly extinct group of seedless vascular plants, with one living member, a homosporous plant.
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lignin
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is embedded in plant cell walls between the cellulose matrix, and it is a very stable molecule that does not break down easily
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lycophyte
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seedless vascular plants which appeared during the Devonian period, but split into two lines during the Carboniferous period.
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megaspore
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develop into haploid female gametophytes
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microspore
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develop into haploid male gametophytes
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phloem
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transports the sugars made during photosynthesis down to the plant’s roots for energy.
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xylem
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primarily the vasculature where water and minerals travel from the roots up the stems to the various parts of the plant
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