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protists.notebook May 07, 2012 The protozoans (Kingdom Protista) are varied and thier taxonomy is often debated. The most recognized classification groups them into two major categories: 2 Types of Protists 1. Plant like protists (not plants, but have similarities like photosynthesis) 2. Animallike protists (not actually animals, but "eat" like animals do) Protists Prokaryotes vs. Eukaryotes Debatable 3rd type: 3. Funguslike protists

Protists - whssbiozone · PDF fileprotists.notebook May 07, 2012 The protozoans (Kingdom Protista) are varied and thier taxonomy is often debated. The most recognized

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Page 1: Protists - whssbiozone · PDF fileprotists.notebook May 07, 2012 The protozoans (Kingdom Protista) are varied and thier taxonomy is often debated. The most recognized

protists.notebook May 07, 2012

The protozoans (Kingdom Protista) are varied and thier taxonomy is often debated. The most recognized classification groups them into two major categories:

2 Types of Protists 1.  Plant ­ like protists (not plants,but have similarities like photosynthesis)2.  Animal­like protists (not actually animals,but "eat" like animals do)

Protists

Prokaryotes vs. Eukaryotes

Debatable 3rd type:3. Fungus­like protists

Page 2: Protists - whssbiozone · PDF fileprotists.notebook May 07, 2012 The protozoans (Kingdom Protista) are varied and thier taxonomy is often debated. The most recognized

protists.notebook May 07, 2012

Plant­like Protists • they are "plant­like" because they contain chlorophyll and carry out photosynthesis • they are autotrophic • However, in darkness they become heterotrophic ­ engulf solid food 

Euglenas • move by a whip­like structure called flagella. • the eyespot is sensitive to light. • reproduce asexually. 

euglena partyhttp://www.youtube.com/watch?v=JNwh67CPh­8

Page 3: Protists - whssbiozone · PDF fileprotists.notebook May 07, 2012 The protozoans (Kingdom Protista) are varied and thier taxonomy is often debated. The most recognized

protists.notebook May 07, 2012

Algae • Green, brown and red algae • Aquatic organisms but are also found in soils,   on the lower trunks of trees and on rocks • Primary food producers in aquatic food chains • Supply about 80% of global supply of oxygen • There are many uses to algae: 

o consumed as food by humans, o used as fertilizers o help create petroleum resources 

Example: phytoplankton 

• some species can be multicellular (volvox, kelp)• includes the diatoms, with glass­like 2 part shells• includes the dinoflagellates, unicellular with two flagella (cause red tide)

phytoplankton kelp

diatoms

Page 4: Protists - whssbiozone · PDF fileprotists.notebook May 07, 2012 The protozoans (Kingdom Protista) are varied and thier taxonomy is often debated. The most recognized

protists.notebook May 07, 2012

Animal­like Protists • are single­celled eukaryotes • classification is based on the way they move and feed. • they are heterotrophs 

The Zooflagellates • These species move by flagella and may have one, two or many flagella. • some live in fresh or salt water, most live in the bodies of larger organisms. • eg. Trypanosoma (causes African sleeping sickness, carried by the tse tse fly) 

Page 5: Protists - whssbiozone · PDF fileprotists.notebook May 07, 2012 The protozoans (Kingdom Protista) are varied and thier taxonomy is often debated. The most recognized

protists.notebook May 07, 2012

The Amoebas • they live in ponds, where they crawl along the bottom or over plants • they reproduce asexually by binary fission • they eat by phagocytosis• they move using pseudopods 

Parasitic amoebas cause amoebic dysentery

amoeba feedshttp://www.youtube.com/watch?v=W6rnhiMxtKU

http://www.youtube.com/watch?v=zTFsn9xt7b0

giant amoeba

Page 6: Protists - whssbiozone · PDF fileprotists.notebook May 07, 2012 The protozoans (Kingdom Protista) are varied and thier taxonomy is often debated. The most recognized

protists.notebook May 07, 2012

The Ciliates • use cilia to move and capture food • most ciliates are free living in fresh or salt water, some attach to a surface by a stalk and stay in one place others live in bodies of host animals. • eq. Paramecium 

paramecium feedshttp://www.youtube.com/watch?v=saLYHUs6cWk

Page 7: Protists - whssbiozone · PDF fileprotists.notebook May 07, 2012 The protozoans (Kingdom Protista) are varied and thier taxonomy is often debated. The most recognized

protists.notebook May 07, 2012

The Sporozoans • are parasitic, absorbing food from    the fluids of their host • have no means of locomotion • reproduce by the formation of spores. • eg. Plasmodium Vivax (causes Malaria) 

AND.....The Fungus­like Protists:The Slime Moulds

• all are heterotrophic, most are decomposers• live in cool damp habitats• are acellular, cellular, or water moulds

slime mold time lapsehttp://www.youtube.com/watch?v=GScyw3ammmk