Please enable JavaScript.
Coggle requires JavaScript to display documents.
Nonvascular Plants (characteristics (embryophytes, no vascular tissue,…
Nonvascular Plants
characteristics
embryophytes
no vascular tissue
multicellular sporangia/gametangia
cuticle over much of body
gametophyte large
sporophyte small
Division Bryophyta
gametophyte generation
grow close together
grow as ribbons up to 15 cm long
cuticle only on upper surface
underside absorb water :arrow_down:
slender stems
tissue called cortex
water transport
hydroids
conduct water
dissolve minerals
lose cytoplasm when mature
leptoids
resemble sieve cells
elongated
lack nuclei at maturity
retain cytoplasm
conduct water along exterior
capillary action
cell undergo mitosis
protonema
reproduction
sperm-antheridia :male_sign:
egg-archegonia :female_sign:
sporophyte generation
zygote undergo transverse division
basal cell develops into foot
absorbs sugars
minerals
water :sweat_drops:
capsule
consist of outer layer of sterile cells
inner column of sterile cells
undergo meiosis
seta between foot and sporangium
cell breakage is elaborate and precise
operculumn
peristome teeth
calyptra
metabolism
compensation for not retaining water
can lose much of water w/out dying
resistant to high/low temp & UV light
colonize bare surface and dissolve it
Division Hepatophyta
gametophyte
leafy or thallose
initiated when spores germinate
bisexual
produce both antheridia and archegonia
unisexual
male-antheridiophore :male_sign:
sporophyte
foot
seta
very delicate
calyptra-covered sporangium
no peristome teeth
differentiate into elaters
homosporous
Division Anthocerotophyta
gametophyte
parenchymatous
don't tolerate drying
winter annuals :snowflake:
sporophyte
foot
no seta
no discrete sporangium
classification
3 divisions
liverworts
#
Hepatophyta
mosses
#
Bryophyta
hornworts
#
Anthocerotae
