Like this study set? Create a free account to save it.

Sign up for an account

Already have a Quizlet account? .

Create an account

traits of embryophtes

-alertnation of heteromorphic generations
-multicellular gametangia
-multicellular sporangia
-matrotophic embryo


-tough, decay resistant coat that surrounds land plant spores

sporopollenin function

-protection from dessication
-protection from disease

groups of land plants



-small embryophytes that lack vascular tissue, have a dominant gametophyte generation

bryophytes classified into three divisions


gametophyte body forms

-thallus=flattened disc or ribbon
-"stem-leaf" structure
-rhizoids anchor gametophte

sporophyte structures

-foot=embedded in gametophte
-sporangium=also called capsule in bryophtes


-species diversity (eighth)
-phylogenetic diversity

unique features of anthocerotophyta

-symbiotic relationship with nitrogen-fixing bacteria
-sporophte lacking a seta
-sporangium with basal meristem

gametophyte features

-chloroplasts=one per cell
-pyrenoids=starch organizing area
-ancestral features


-seta absent
-basal meristem (continuously produces new spores)


-species diversity (fourth)

hepatophyta unique features

-oil bodies in cytoplasm
-gemmae cups
-elaters in capsule

gametophyte differentiation

-complex thallus
-upper surface=pores, air chambers, photosynthetic tissue
-lower surface=rhizoids, anchor the thallus


-fertile brances bearing gametangia
-two kinds=archegoniophores, antheridophores

gemmae cups

-asexual propagules
-formed in gemmae cups
-splashed out of rain


-located under the surface of archegoniophore
-structure=foot, seta(short), capsule

sporophyte capsule

-filled with spores
-elaters= long skinny, twist in response to humidity to disperse spores


-species division (second)


-initial gametophyte growth phase
-structure=branching, green and photosynthetic, buds produce adult gametophytes

sphagnum- peat moss

-explosive dehiscence
-leaves with hyaline cells (large dead cells, barrel-shaped, fill with water)

sphagnum and acid

-hyaline cells=released phenols and tannins
-acid slows decompostion of organic material
-forms peat


-plant matter that accumulates under water-logged conditions and does not decompose
-1/3 or all terrestrial carbon locked in peat

peat uses

-wound dressing in WW1
-burned for fuel

dehiscence by peristome, capsule structure

-operculum:capsule lid falls off
-peristome:ring of teeth underneath operculum

perisotme mechanism

-peristome teeth
-move in response to humidity: close capsule when moist, open capsule when dry

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

Voice Recording