suite taxonomy eukaryota
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diatoms are uni or multi?
unicellular, phototrophic
over how many species of diatom do we find?
100 000
in what habitats do we find diatoms?
Freshwater and marine
diatoms sont entouré par ?
frustules
What is a frustules?
cell wall made of silica with proteins and polysaccharides attached to it
frustules protect againts?
predation
When did diatoms appear?
appeared on Earth about 200 million years ago
cercozoans and radiolarians how are they distinguished from other protist?
by their threadlike pseudopodia (pseudo=false and podia=feet)
one type of cercozoans?
foraminifera
foraminifera are exclusively what kind of organisms?
marine
Foraminifera form what kind of ornate?
shell-like structures called tests
the test of foraminifera are made of?
are made from organic materials reinforced with calcium carbonate
type of Rhizaria?
• Radiolarians - Foraminiferans
radiolarians are mostly what?
marine
What kind of organisms are radiolarians?
heterotrophic
test of radiolarians are made of?
silica
radiolarians why are they called like that?
name is derived from radial symmetry of tests
cercozoans and radiolarians are what kind of cellular?
unicellular
what kind of class are we seing in the amoebozoa supergroup?
• Cellular slime molds • Plasmodial slime molds • Entamoebas • Gymnamoeba
amoebozoa are what kind of protists?
Terrestrial and aquatic
what do amoebozoa use for movement or food?
pseudopodia
how do amoeboid move?
cytoplasmic streaming
major groups of amoebozoa?
• gymnamoebas • entamoebas • slime molds
what are gymnamoebas?
free-living, inhabit soil and aquatic environments