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