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pbio s. vasc. plants

QuestionAnswer
lycophytes group of vascular plants that include the clubmosses
tracheophytes lignin, branched sporophytes with multiple sporangia, differentiated tissues, reduction of gametophytic generation
main groups of seedless vascular plants rhyniophyta, lycopodiophyta, monilophyta
spores are made in sporangia
sporangia are subtended by sporophylls
spores germinate into gametophytes
heterosporous few ferns, some lycophytes, seed plants
homosporous most ferns, equisetophytes, some lycophytes (ancestral)
rhyniophyta undifferentiated into roots/leaves, homosporous, cuticles and stomata present, terminal sporangia, wet habitats
zosterophyllophyta leafless, dichotomiusly branched, spores arranged laterally, homosporous, ancerstors to lycophytes
trimerophytophyta gave rise to ferns and progymnosperms, lacked leaves, lateral branches present, homosporous, plants over 1 meter tall
lycopodiophyta 1200 extant species, microphylls, club mosses, spike mosses, quillworts
lycopodiaceae homosporous, worldwide distrubution, prostele, microphylls, sporophylls, bisexual gametophyte
selaginellaceae spike mosses, 750 species, microphylls, heterosprous, male/female gametophytes, biflagellate sperm
endosporic gametophyte the retention and development of gametophytes, partially or entirely, within the walls of the generative spore
Created by: emma.boc
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