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46 Cards in this Set

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what are the general features of bryophytes?
low to the ground, not true leaves/stems/roots, no vascular tissue, attached to ground by rhizoids
how do brophytes as a group differ from other plants?
no vascular tissue, no true stems/leaves/roots
what are the three phyla of bryophytes?
bryophyta, hepaticphyta, anthocerophyta
what phyla of bryopytes is most diverse?
bryophyta
what bryophyte phyla is least diverse?
anthcerohpyta
what do liverworts, hornworts, and mosses have in common?
dominant gametophyte stage, no true stems/roots/leaves
how does hepaticophyta differ from bryophyta and anthocerophyta?
simpler, flat/branched gametophyte, has air chambers for gas exchange that can't close
how does anthocerphyta differ from brophyta and hepaticphyta?
cell structure has with single large chloroplast resembles certain algae. hepaticophyta and bryophyta contain many small disc shaped chloroplasts. sporophyte forms a horn-shaped spike after fertilization. has stomata to regulate gas exchange
this is the gamete plant and source of gametes
gametophyte
this is the spore plant, it's diploid and is the source of haploid spores
sporophyte
this is the female gametangia in bryophtes that can develop on the same plant as male gametangia or on different plants
archegonium
this is the male gametangia in bryophytes that can develop on the same plant as female gametangia or on other plants
antheridium
this is a flattened, lobed, leaf-like body in liverworts
thallus
this is a asexual spore that gives rise to new gametophytes in bryophyta and hepaticophyta
gemmae
this is the structure responsible for anchoring Bryophtes to substrate and absorbing water
rhizoid
this is leafless, single, spindle shaped stalk common to sporophytes of bryophytes
seta
what are the features of mosses(bryophyta)?
no true stems/leaves/roots, held to ground by rhiziods, leaf like structures arranged spirally around axis
where are mosses found?
terrestrial environment in shady damp areas
what is the dominant stage in moss life cycle?
gametophyte
are mosses photosynthetic?
yes
do mosses typically have conducting tissue in stems?
yes. water can rise up specialized cells in center stalk of moss gametophyte
do mosses have true roots?
no
do mosses need true roots?why or why not?
don't need true roots. only lives in damp habitat. gametes travel through water new plants bud off asexually from thallus
what do mosses have instead of roots??
rhizoids
what function do rhizoids serve?
anchor moss to substrate
what function do rhizoids serve?
anchor moss to substrate and absorb some water
what are antheridia and archegonia?
the male and female reproductive structures that can be located on the same individual or different individuals
is the sporophyte diploid or haploid?
diploid
are spores diploid or haploid?
haploid
what type of gametangia does a monocious moss have?
antheridium(male) and archegonium(female)
what type of gametangia does a dioecious moss have
gametangia of one type either antheridium(male) or archegonium(female)
what type of gametangia does a monocious moss have?
both antheridium(male) and archegonium(female)
what is the asexual spore of bryophytes and hepaticophytes?
gemmae
what structure can absorb a limited amount of water in brophytes?
rhizoid
what is the spindle shaped stalk common to bryophytes?
seta
what is the function of archegonia?
produces eggs
what is the function of antheridium?
produces sperm
what is the relationship of the sporophyte and gametophyte?
sporophyte is parasitic on the gametophyte
what are the features of liverworts?
flattened/lobed leaflike structure called thallus that looks like human liver
where are liverworts found?
damp environments
what are the two means of asexual reproduction for liverworts?
gemmae can be splashed out by rain an turn into new liverwort or thallus can elongate and become a new plant
what are the two forms of liverworts?
leafy and thallose
do liverworts have vascular tissue?
no vascular tissue
in liverworts are antheridia(female) and archegonia(male) usually found on the same individual?
yes.

on the diploid sporophyte or haploid gametophyte?
haploid gametophyte
what are the features of hornworts?
cell structure resembles algae, forms a horn shaped spike after fertilization, resembles thalloid liverworts
where are hornworts found?
damp humid places