suite taxonomy eukaryota Flashcards
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
What are entamoebas?
parasite of vertebrates and invertebrates
slime mold where at the beginning grouped with?
fungi
why were slime mold grouped with fungi?
they have similar life cycle: produce fruiting bodies with spore for dispersal
are slime molds motile?
yes, they can move across surfaces rapidly
what’s the vegetative form of the plasmodial slime mold?
masses of protoplasm(cytoplasm,nucleus,organelles) of indefinite size and shape that contain multiple nuclei
in plasmodial slime multiple nuclei means?
not divided into individual cells
From the _____a ____ can form containing ____
- Plasmodium
- Sporangium
- multiple haploid spores(dormant,resistant,for dispersal)
The spore germinates, yielding a ______(flagellated or amoeboid).The fusion of two _____regenerates the ____plasmodium
- swarmer cell
- swarmer cell
- diploid
the cellular slime mold is composed of ?
vegetative form composed of single amoebae ( haploid )
(cellular slime mold) aggregate of separate amoeboid cells from?
a pseudoplasmodium(slug)
the slug can move as a single?
unit (cells do not fuse)
after the slug migration what is formed?
fruiting body is
after the fruiting body?
the cell differentiate into spores
cellular slime mold under certain conditions it can?
may form diploid macrocyst that undergo meiosis to form new amoeba (haploid)
cellular slime what kind of reproductino?
sexual
fungi are what kind of cellular?
multicellular
fungi form a network of ?
hyphae(mycelium)
What’s coenocytic?
a condition of fungi where cytoplasm and nuclei are subdivided into cells
What’s septate?
a condition in fungi where nuclei are separated by cross wall
hyphae that extend above the surface can?
produce asexual spores
the hyphae of fungi that can produce asexual spores how are those asexual spores called ?
conidia
Conidia are often ?
pigmented and resistant to drying
most fungal cell walls are made of ?
Chitin
how do fungi eats?
by secreting extracellular enzyme that digest complex organic materials( polymers)
then what happens with the monomers or polymers ?
assimilated
