Term
-internal conduction tissue developed -true leaves appeared -roots that funtion in absorption and anchorage developed -gametophytes became progressively smaller |
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Definition
4 things occured during early stages of vascular evolution: |
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Term
psilotophyta, lycophyta, equisetophyta, polypodiophyta |
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Definition
4 phyla of seedless vascular plants: |
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Term
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Definition
sporophytes have neither true leaves, nor roots
stems and rhizomes fork evenly (dichotomous branching) |
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Definition
plants covered with microphylls |
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Term
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Definition
leaves w/ single vein whose trace is not associated with a leaf gap |
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Definition
leaves with more than one vein and a leaf trace associated with leaf gap |
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Definition
sporophytes have megaphylls that are often large and much divided |
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Term
vary in size from 1cm to 25 m
leaves are megaphylls
require external water for reproduction |
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Definition
structure and form of ferns: |
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Term
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Definition
fern leaves that are megaphylls |
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Term
reproduction of the ferns |
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Definition
fronds first appear coiled in crozier and then unroll & expand
meiosis forms spores in sporangia
spores released & grow into gametophytes(prothalli)
zygote develops into young sporophyte
gametophyte dies and leaves sporophyte growing independently |
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Definition
sporangia may be scattered on lower leaf surface or found in discrete clusters called: |
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Term
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Definition
sori may be protected by ______ with a row of heavy walled brownish cells called _____ |
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Term
house plants (air filters) outdoor ornamentals cooked rhizomes as food folk medicine fronds used in thatching for homes basketry and weaving |
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Definition
6 human and eco relevant uses of phylum polypodiophyta (ferns) |
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