Transcript of Eukaryotes Have nucleus and membrane bound organelles Most are unicellular, some are multicellular...
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- Eukaryotes Have nucleus and membrane bound organelles Most are
unicellular, some are multicellular or colonial Can be plant-like,
fungus-like, or animal- like Kingdom is considered to be obsolete
and will be split into newly designated kingdoms
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- EUGLENOPHYTA Uincellular, have chlorophyll a and chlorophyll b
Have flagella tht protrude from a gullet and an eyespot that helps
them respond to light (phototaxis) Live in fresh water that is rich
with organic material May exist as autotroph or heterotroph
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- Unicellular organisms that live in marine and freshwater. Have
photosynthetic pigments, two flagella and cell walls of cellulose.
Some produce toxins associated with red tides.
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- Includes the golden algae Most are unicellular, some
multicellular Have photosynthetic pigments, golden color Cells are
covered with tiny scales of silica or calcium carbonate
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- Green Algae Have photosynthetic pigments Most have flagella at
some phase of their lives. Store food as starch
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- Brown algae - Mostly multicellular Photosynthetic and have
chlorophyll a,b,c plus carotinoids. Asexual zoospores and gametes
have two flagella. Includes giant kelps
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- Red Algae Mostly multicellular marine seaweeds. Have
chlorophyll a and b and red pigment called phycobillin Found at
great depths Used in sushi
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- Diatoms Usually non-motile unicellular organisms Cell walls are
in two parts and are made of silica (look like petri dish)
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- Non-photosynthetic Heterotrophs
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- Unicellular protozoa Move by flagella Some live in guts of
termites Trichonympha Others are parasitic and cause disease, such
as African sleeping sickness, Trypansoma
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- Amoeba Performs phagocytosis by surrounding and engulfing food
using pseudopodia (false feet)
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- Unicellular protists Have calcareous shells with pores through
which cytoplasm extends
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- Unicellular protozoans Move about and feed using tiny hairs
called cilia. Best know is Paramecium, has two nuclei, and oral
groove, and contractile vacuoles
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- Non-motile parasitic spore-formers Lack flagella Amoeboid body
form Include Plasmodium, the malaria parasite In red blood
cells
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- Slime molds produce large multinucleated masses (plasmodium
different than malaria Plasmodium) Some have stalks that grow
upward and form spores Other times produce gametes which fuse and
produce a diploid zygote that forms the multinucleate mass Found in
moist soil, decaying leaves or logs in a damp forest.