5. Algae and Protists Flashcards
ENDOSYMBIOSIS
Incorporation of mitochondria and chloroplasts into a cell.
PROTISTS
All organisms that do not have a distinct characteristics of fungi, plants or animals.
PROTOZOANS
Unicellular organisms that ingest and are mobile.
SLIME MOLDS
Heterotrophic protists that spare terrestrial, feeding on organisms in decaying plant and animal matter, can be in the form of a multinucleate mass or uninucleate and amoebic.
MYXOMYCOTA
Plasmodia slime molds eat by phagocytosis, move in amoebic motion, reproduce sexually by spores.
DICTYOSTELIOMYCOTA
Free-living myxamoebas in soil feeding on bacteria, exhibit chemists is and form a slug like mass of cells.
OOMYCOTA
Unicellular and filament ours forms, non-motile cells, motile sperm, zygote = thick walled oospore.
ALGAE
Unicellular and filamentous, lack leaves and roots and flowers and seeds, may have specialized tissue, photoautotrophic, often endosybiotic relationships, produce oxygen.
DINOPHYTA
Dinoflagellates, mostly unicellular and double-grooved biflagellate, stiff cellulose plates.
EUGLENOPHYTA
Mostly unicellular, have contractile vacuoles, asexually divide as they swim.
DIATOMS
Two-part call walls made of cellulose and silica, bilaterally symmetric = pen ate, radially symmetric = centric.
PHAETOPHYTA
Brown algae seaweeds, often dominant, vegetatively branched filaments (thallus), use air bladders for buoyancy, exhibits alternation of generations.
RHODOPHYTA
Red algae seaweeds, some create calcium carbonate deposits, inhabit coral reefs or tide pool rocks.
CHLOROPHYTA
Unicellular to parenchymous (tissue like), mostly actuated or on snow or trees, ancestral to land plants, cell walls of cellulose.
VOLVOX
Colonial algae with specialized reproductive cells divide by mitosis p, sexual reproduction possibly by oogamy.
