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efrain12
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how do mosses fit in with plants?
mosses are evolved from green algae (chlorophyta)
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Mosses are nonvascular plants...
they lack vascular tissue
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which kingdom do mosses belong in?
kingdom plantae
-they are small, dead-end line.
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3 phyla of nonvascular plants
-division hepatophyta
-division Anthocerotophyta
-division Bryophyta
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Hepatophyta
-liverworts
- A) ribbon like, flattened
- -thallus: plant body
- B) leafy
- -looks more like a moss
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Archegomophores
male reproductive.
umbrella like
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Antheridiosphores
-female reproductive
-palm tree like
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Anthocerotophyta
-hornworts
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Bryophyta
-bryophytes
mosses
-largest group
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characteristics of phylum bryophyta mosses (8)
- -eukaryotic
- -multicellular
- -phtosynthetic
- -embryo and zygote both inside jacket
- -nonvascular
- -no true organs
- -requires water for part of life cycle
- -land plants
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(characteristics) embryo and zygote
-inside protective jacket of cells
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(characteristics) Nonvascular
a) no xylem or phloem ( some have modified conducting cells)
b)no conduction
c) lack support from xylem cells
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(characteristics) no true organs
a) no leaf, stem, or roots
- b) instead of roots, Rhizoids
- -small thread like
- -anchorage
***** real leaves and stems have veins/vascular tissue
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(characteristics) Requires water for part of lif cycle
a) most need a wet environment, bc they are nonvascular
b) sperm swims to egg in fertilization
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(characteristics) land plants
a) first plants to evolve on land
b) dead-end line of evolution
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(moss) gametophyte generation alternations
a) egg and sperm
b) gametophyte plant
c) Archegonian
d) antheridium
e) protonema
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(gametphyte alternations) egg and sperm
female and male reproductive
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(gametphyte alternations) gametophyte plant
larger part of moss
-green and its photosynthetic
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(gametphyte alternations) Archegonium
female producing cell 
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(gametphyte alternations) Antheridium
-male producing egg
-located on the gametophytes
-jacket of cells surrounding the egg or sperm
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(gametphyte alternations) protonema
-grows from spores
-looks like a filamentoud, green algae
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which of the generation is most dominant in mosses?
gametophyte
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Sporophyte generation alternations
-diploid
a) zygote and embryo
b) sporophyte plant
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(sporophyte alternation) zygote and embryo
-formed by sperm swimming and fertilized egg
-remains inside archegonium
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(gametphyte alternations) Sporophyte plant
-dependent grows on gametophyte
-not green or photosynthetic
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(gametphyte alternations) Seta
-stalk
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(gametphyte alternations) Peristomes
-teeth
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(gametphyte alternations) Operculum
--lid
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(gametphyte alternations) Calyptra
may not be present.
top most part of sporophyte
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