Lesson 9

Review:
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characteristics of living things
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six kingdoms
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reproduction of virus
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bacteria
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archaea
Dec 16­9:25 AM
Kingdom Protista
­ protista include a wide variety of organisms
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they tend to be microscopic, eukaryotic organisms classified into three major groups according to their type of nutrition
(1) Protozoa
­ animal like protists that are heterotrophs and ingest or absorb food
­ they include the following
(a) Flagellates (Phylum Zoomastigina)
­ Ex. trypanosomes (pg 141)
(b) Sarcondines (Phylum Sarcodina) ­ Ex. foraminifera (pg 141)
(c) Ciliates (Phylum Ciliophora) ­ Ex. paramecium (pg. 145)
Dec 16­9:28 AM
1
Dec 16­10:02 AM
(2) Algae
­ plant like protists that are autotrophs and tend to carry out photosynthesis (pages 147 ­ 150)
(a) Green Algae (Phylum Chlorophyta)
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found in fresh water and damp places
(b) Brown Algae (Phylum Phaeophyta)
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found in cold oceans
(c) Red Algae (Phylum Rhodophyta)
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found in warmer oceans
(d) Diatoms (Phylum Chrysophyta)
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found in the ocean (plankton)
(e) Dinoflagellates (Phylum Pyrrophyta)
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live in a marine envrionment
(f) Euglenoids (Phylum Euglenphyta)
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live in freshwater
Dec 16­9:35 AM
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Dec 16­10:03 AM
(3) Slime Moulds and Water Moulds
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characteristics of fungi, protozoa and plants
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fungi because they produce spores
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protozoa because they glide from place to place
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plants because they have cellulose cell walls
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Pages 150 ­ 151
Dec 16­9:42 AM
3
(a) Water Moulds (Phylum Oomycota)
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live on dead organic material
(b)Plasmodial Slime Moulds(Phylum Myxomycota)
­ tiny slug like creatures
­ live on damp decaying material
(c) Cellular Slime Moulds (Phylum Acrasiomycota)
­ cells within a nucleus, ingest tiny bacteria or yeast cells
Dec 16­9:48 AM
Dec 16­10:05 AM
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Life Cycle of Plasmodium Vivax (page 146)
(Sporozoan category of Protozoa)
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this is a protist that causes a form of maleria
Step 1: Mosquito picks up the protist reproductive cells from an infected person
Step 2: Reproductive cells form a zygote inside the mosquito. Zygote divides and eventually breaks open releasing sporozoites
Step 3: Sporozoites go to mosquito salivary glands where they are injected into a new host
Step 4: Inside the host the sporozoites reproduce asexually in the liver to form a new type of spore like cell which enters the blood stream infecting the red blood cells
Step 5: Blood cells rupture releasing more spores which go on to infect other red blood cells
Dec 16­9:52 AM
Dec 16­10:07 AM
5
Readings:
Pages 140 ­ 151
Questions:
Page 151: #'s 1,2,4,5,6
Dec 16­9:58 AM
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