protists are…
eukaryotic
unicellular and multicellular species
nonmotile and motile species
aquatic and terrestrial species
autotrophic (photosynthetic) and heterotrophic species
protist examples
paramecium
amoeba
slime mold
euglena
A protist is a _______ that is…
Eukaryote
not a plant
not a fungus
not an animal
protists have no unique _________ that distinguish them from other eukaryotes!
synapomorphies
protists are not a _______ group, as they contain a common ancestor and some, but not all descendants. Instead they form ________ groups!
monophyletic; paraphyletic
why are protists important in the aquatic food pyramid?
they are the base, so ecosystems would collapse without them
plasmopara viticola
causes downy mildew of grapes
destroyed the wine and grape industries
a professor created the first foliar fungicide used to control plant diesase and solved the problem
phytophthora…
causes diseases in avocados, onions, tomatoes, strawberries, apples
most famous member is P.infestans
cause late blight of potato (disease)
phytophythora results in the _____________
destruction of the tubers
phytophythora caused the ________ in Ireland
potato famine
single celled protists use ________ as a means of _______ reproduction
mitosis; asexual
single cell protists may have been the first to have…?
sexual reproduction
most protists have a …?
haploid dominant life cycle
some protists have a
diploid dominant life cycle
other protists exhibit an alternation of ______ and ______ multicellular generations
haploid; diploid
zygotic meiosis is….
haploid dominant
anisogamy
the gametes are NOT identical
oogamy
“fraternal”, one is sperm and one is egg
isogamy
identical gametes
rockweed fucus (brown algae)
oogamy “fraternal”
diploid dominant
gametic zygosis
everything is diploid except the haploid gametes
alternation of generations (AoG)
plants (sporic meiosis) and algae
heteromorhphic (AoG)
brown algae (haploid spores)
isomorphic (AoG)
sea lettuce