Studied by 0 peoplecharophytes
extant group of green algea that are most closely related to modern land plants
algae
simple, aquaticm plant-like, no true roots, stems or leaves
extant
surviving
shared characteristics of plants
sporopollenin
rosette shaped cellulose synthesiizng complexes
peroxisome enzymes
structure of flagellated sperm
phragmoplast
new conditions of land plants not faced by water plants
unfiltered sun
access to ore co2
nutrient rich soil
fewer herbiovres and pathogens
scarcity of water
lack of structural support
unique characteristics to land plants
distinct alternation of generations
walled spores produced in sporangia
multicellular gametangia produce sperm anf egg
apical meristems- localized areas of cell division in shoots and tips
common structure between land and water plants
plant body consisitiong of stems, roots, and leaves
plant life cycles
2 geenrations of multicellular organisms
the two generations
gametophyte and sporophyte, each generation gives rise to the other
is sporophyte haploid or diploid
diploid
what does the sporpophyte generation make
spores
how is the sporphyte genration made
mitosis
are spores haploid or diploid
haploid- no fertilization
is the gametophyte generation haploid or diploid
haploid
how is the gametophyte generation made
mitosis of haploid spore
are gametes haploid or diploid
haploid
which generation has archegonium and antheridium
gametophyte
archegonia
female gamteangia
gametangia
gamete producer
antheridia
male gametangia/sperm
spores reproduce by
meiosis
sporphytes and gametophytes are both produced by
mitosis
Two types if vascular plants
Seedless and seed planrs
Two types of seed plants
Gymnosperms and angiosperms
Herbaceous
Non woody
Vascular plants have … tissue
Vascular
Vascular plants have …. Roots and leaves
Well developed
Vascular plants doninant life cycle
Sporophyte
Two phyla of seedless vascular plants
Lycophyta and pterophyta
Lycophyta
Club mosses, spike mossed and quill warts
Phylum pterophyta
Fern, horsetails, and whisk ferns their relatives
Dominant generation in seedless vascular plants
Sporophyte
Phrahmoplast
constructs the cell wall that will partition the cytoplasm and separate the two daughter nuclei of the dividing cell
Dominant generation in bryophytes
Gametophyte
Rhizoids
“roots” of moss. Dont absorb water
Haploid reproductive cells formed from meiosis in a mature sporophyte; can develop into a new haploid organism without fusing with another cell
Spore
Sporopollenin
Prevents exposed zygotes from drying out in green algae and is found in the walls that encase spores of land plants
In seed plants, the _______ is the structure that gives rise to and contains the female reproductive cells
Ovule
Gymno speem
Vascular plants that produce seeds in cones
Sporangia
Multicellular organs in the sporophyte stage that produce spores by meiosis
Note
Flashcard