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BIOLOGY__Chapter 20-PROTISTA notes
I.The Kingdom Protista
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Defined more by differences than similarities
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Not actual plants ,animals or fungi
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Many _________________________- and all eukaryotes
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So diverse that many biologists suggest they should be composed of several kingdoms
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Classification based on :
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1)________________________________-heterotrophs,autotrophs,decomposers and parasites
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2)Some classified by how they move
II. Animallike protists:___________________________________
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4 Phylla: distinquished by modes of movement
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___________________use whiplike flagella;many are aquatic;many absorb food through cell
membranes;many reproduce asexually and some sexually by meiosis
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Sarcodines use _________________for movement and feeding:example-amoebas-move by
extensions of psuedopods:have food vacuoles;_______________secrete calcium carbonate
shells
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--Paramecium
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Ciliophora move by hairlike __________________;best known are of genus ____________-has
micronucleus and macronucleus,gullet or oral groove,anal groove,contractile vacuole to
balance water content,reproduce asexually and sexually by conjugation
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_____________do not move;many parasites,reproduce by ________
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--Diseases from protists
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****-_____________________-caused by Plasmodium and Anopheles mosquito,many forms
resistant to drugs
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Other Protistan diseases_Trypanosoma
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Carried by ______fly
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Amebic dysentery
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Giardia
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NONPARASITIC__Trichonympha-mutualism
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Digests wood for termite!!!!
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III.Plantlike Protists
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Unicellular algae
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Contain chlorophyll and undergo photosynthesis
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***_____________________-plantlike,have flagella and no cell wall
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_________________________________-yellow-green algae and golden brown algae
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_______________________-thin ,delicate CELL WALLS OF SLICA-GLASSLIKE
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DINOFLAGELLATES-half are photosynthetic and half are heterotrophic,some luminescent
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PHYTOPLANKTON-near surface of ocean and food source
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Algal blooms that are massive depletion of nutrients and many cells die-an indicator of pollution
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IV .Plantlike protists-red,brown and green algae
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Red algae-__________________-uses chloroplyll a and accessory pigments and can live at
great depths;most multicellular and play role in coral reef
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Brown algae________________________-have chlorophyll a and c and an accessory
pigment:largest and most complex of algae-kelp can grow 60 m in length
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Green algae-_______________________-have chlorophyll a and b;unicellular,colonial,and
multicellular
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HUMAN USES OF ALGAE-
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-animal and human food source
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-used in medications
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-ice cream
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-used in making plastics,waxes,deodorants,paints,transitors ,lubricants,agar,toothpaste
V.Funguslike protists
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Have centrioles and LACK chitin cell walls of regular fungus kingdom
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Heterotrophs as decomposers
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SLIME MOLDS-on forest floor-spore forming
WATER MOLDS-hyphae and spores-connected to great “Potato Famine”
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