Lecture 14: Protist Diversity Flashcards
What are the four Eukarya supergroups?
Excavata, SAR clade, Archaeplastida, Unikonta
What makes up the SAR clade?
Stramenopile, Alveolate, Rhizaria
Which Eukarya clade includes the land plants?
Archaeplastida
Which Eukarya clade includes fungi and animals?
Unikonta
_____ are paraphyletic, eukaryotes, mostly unicellular but sometimes colonial/multicellular
protists!
some members of this clade have an “excavated” feeding groove on one side of their cell body
excavata
Euglenozoans are a phyla of what clade?
excavata
_____ have flagella to help with mobility, usually small and unicellular, vary from predator to parasites
euglenozoans
euglenids are within which phyla of the clade exacavata
euglenozoans
____ are mixotrophic, unicellular freshwater organisms, have no cell wall, a membrane-bound nucleus, contractile vacuole, and one to two flagella
euglenids
what does mixotrophic mean?
can be autotrophic and use photosynthesis when light is available, or can use heterotrophic feeding when light isn’t available
the diatoms are part of which phyla in the SAR clade?
stramenopiles
___ are a major component of oceans and lakes, and make up a large part of sand content when fossilized
diatoms
____ are colonies of unicellular organisms and apart of the stramenopiles
golden algae
____ are large and complex multicellular organisms and have plant-like structures, also apart of the stramenopiles
brown algae (kelps and giant seaweed)
dinoflagellates are apart of which phyla in the SAR clade?
alveolates
____ have a body made up of cellulose and have explosive growth (blooms) when exposed to too much nutrience
dinoflagellates
what is the closest relative of land plants?
archaeplastida
red and green algae are apart of which clade?
archaeplastida
components of algal cell structure:
cell wall (rigid when mature, permeable), vacuole (regulates water content with tugor pressure), pyrenoids (within chloroplasts, site of starch synthesis and only in algae)