Botany Test 2 Plant Life Cycle and Bryophytes
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20 terms
Terms | Definitions |
|---|---|
 3 Major Divisions | Nonvascular plants, Vascular cryptograms, and Spermatophytes |
| bryophytes | nonvascular plants; liverworts, mosses, and hornworts |
| vascular cryptograms | have vascular tissue but do not produce seeds. (ferns) |
| spermatophytes | have vascular tissue and produce seeds. (angiosperms and gymnosperms |
| gametophyte | haploid (n) stage; gamete producing body |
| gametangia | sex organ on the gametophyte |
| antheridium | male sex organ |
| archegonia | female sex organ |
| sporophyte | diploid (2n) stage. spore producing body |
| sporangia | organs on the sporophyte that produce the spores by meiosis |
| alteration of generations | 2n-n-2n |
| phylum hepaticophyta | liverworts |
| phylum brophyta | mosses |
| phylum anthocerophyta | hornworts |
| bryophytes are... | most primitive terrestrial plants |
| liverworts | earliest land plants |
| M.A.S.H | used Sphagnum or peat moss as a bandage substitute |
| peat moss | form floating mats in bogs, swamps, and keep conditions acid enough |
| peat moss increases... | water in soil-2.2 lbs of peat moss is used for absorbtion |
| human uses of bryophytes | packing material, fuel, production of scotch whiskey. |
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