6 Protists are difficult to classify. Protista is often called one kingdomBut it may be broken down into more than one after scientists learn more about them.
7 Protist classification will likely change. Some protists are not closely related.Molecular evidence supports reclassification.Know this!!
8 KEY CONCEPT Animal-like protists are single-celled heterotrophs that can move.
9 Animal-like protists move in various ways. Animal-like protists are often called protozoa.macronucleusfood vacuoleoral groovemicronucleuscontractile vacuolecilia
10 Protozoa with flagella are zooflagellates. flagella help zooflagellates swimmore than 2000 zooflagellates
11 change shape as they move Some protists move with pseudopods.change shape as they moveamoebas
12 Forams Some protists move with pseudopods. change shape as they move amoebas and…Forams
13 cilia help protists swim and capture food Some protozoa move with cilia.cilia help protists swim and capture foodmore than 8000 ciliatesmacronucleusfood vacuoleoral groovemicronucleuscontractile vacuolecilia
14 Some animal-like protists cause disease. Protists cause some well-known infectious diseases.sporozoiteshuman liverliver cellsdevelopedparasitesred bloodcellsMalaria is caused by Plasmodium and spread by mosquitoes.Sleeping sickness is caused by Trypanosoma and spread by flies.A giardia infection is caused by Giardia and spread through water.Malaria Infection
16 Plantlike protists can be single-celled or multicellular. Photosynthetic plantlike protists are called algae.colonydaughter colonyVolvox
17 Do photosynthesis, but are protected by a silica (glass) shell Protists(Diatoms)Do photosynthesis, but are protected by a silica (glass) shell
18 mostly photosynthetic Euglenoids are a large group of plantlike protists.mostly photosyntheticsome heterotrophicsingle-celledone or two flagellapelliclenucleuschloroplasteye spotcontractilevacuoleflagellum
19 have stiff protective plates Dinoflagellates are mostly marine plantlike protists.have two flagellamay be bioluminescenthave stiff protective platescan cause red tideDinoflagellates
20 Multicellular algae are classified by their pigments. Green algae contain chlorophyll a and b.Brown algae contain chlorophyll c.Red algae contain chlorophyll a and phycoerythrin.thickening agents used in ice cream like agar and carrageen come fromRed Algae!
21 Many plantlike protists can reproduce both sexually and asexually. All algae can reproduce asexually.Multicellular algae can fragment.Chlamydomonas divides into zoospores.
22 Some algae produce sexually. Some species alternate generations.Sexual reproduction can be triggered by environmental stress.
24 Slime molds and water molds are funguslike protists. Slime molds have both funguslike and animallike traits.decomposers, like fungican move, like animals
25 Slime molds can be plasmodial or cellular. Plasmodial slime molds are giant cells with many nuclei.Cellular slime molds contain independent cells.Watch ‘em move:
26 Water molds are freshwater, funguslike protists. one type of water mold caused Great Potato Famine of Ireland in the 1800’smade of branching strands of cellscan be parasites of plants or fishIf you see a dead-fish with filiments on it, that’s a watermold