Ch 20 protista
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Ch 20-PROTISTA. The Kingdom Protista Defined more by differences than similarities Not actual plants ,animals or fungi Many _________________________- and all eukaryotes So diverse that many biologists suggest they should be composed of several kingdoms. UNICELLULAR.

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Ch 20-PROTISTA

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Ch 20 protista

Ch 20-PROTISTA


Ch 20 protista

  • The Kingdom Protista

  • Defined more by differences than similarities

  • Not actual plants ,animals or fungi

  • Many _________________________- and all eukaryotes

  • So diverse that many biologists suggest they should be composed of several kingdoms

UNICELLULAR


Ch 20 protista

  • Classification based on :

  • 1)________________________________-heterotrophs,autotrophs,decomposers and parasites

  • 2)Some classified by how they move

nutrition


Ii animallike protists

II. Animallikeprotists:___________________________________

protozoans

  • 4 Phylla: distinquished by modes of movement

  • ___________________use whiplikeflagella;many are aquatic;many absorb food through cell membranes;many reproduce asexually and some sexually by meiosis

  • Sarcodines use _________________for movement and feeding:example-amoebas-move by extensions of psuedopods:have food vacuoles;_______________secrete calcium carbonate shells

Zooflagellates

Foraminiferans

pseudopods


Ch 20 protista

cilia

Paramecium

  • Ciliophora move by hairlike __________________;best known are of genus ____________-has micronucleus and macronucleus,gullet or oral groove,analgroove,contractile vacuole to balance water content,reproduce asexually and sexually by conjugation

  • _____________do not move;manyparasites,reproduce by ________

spores

sporozoans


Ch 20 protista

  • Diseases from protists

  • ****-_____________________-caused by Plasmodium and Anopheles mosquito,many forms resistant to drugs

malaria


Ch 20 protista

***Other Protistandiseases_Trypanosoma

Carried by ______fly

tsetse


Ch 20 protista

****Amebic dysentery


Ch 20 protista

Giardia


Ch 20 protista

NONPARASITIC__Trichonympha-mutualism

Digests wood for termite!!!!


Iii plantlike protists

III.PlantlikeProtists

  • -Unicellular algae

  • Contain chlorophyll and undergo photosynthesis

  • ***_____________________-plantlike,have 2 flagella and no cell wall

Euglenophytes


Ch 20 protista

  • _________________________________-yellow-green algae and golden brown algae

  • _______________________-thin ,delicate CELL WALLS OF SLICA-GLASSLIKE

  • DINOFLAGELLATES-half are photosynthetic and half are heterotrophic,some luminescent

diatoms

Crysophyta


Ch 20 protista

  • PHYTOPLANKTON-near surface of ocean and food source

  • Algal blooms that are massive depletion of nutrients and many cells die-an indicator of pollution


Iv plantlike protists red brown and green algae

IV .Plantlike protists-red,brown and green algae

  • Red algae-__________________-uses chloroplyll a and accessory pigments and can live at great depths;mostmulticellular and play role in coral reef

  • Brown algae________________________-have chlorophyll a and c and an accessory pigment:largest and most complex of algae-kelp can grow 60 m in length

Phaeophyta

Rhodophyta


Ch 20 protista

  • Green algae-_______________________-have chlorophyll a and b;unicellular,colonial,andmulticellular

Chlorophyta


Human uses of algae

HUMAN USES OF ALGAE-

  • -animal and human food source

  • -used in medications

  • -ice cream

  • -used in making plastics,waxes,deodorants,paints,transitors,lubricants,agar,toothpaste


V funguslike protists

V.Funguslikeprotists

  • Have centrioles and LACK chitin cell walls of regular fungus kingdom

  • Heterotrophs as decomposers

  • SLIME MOLDS-on forest floor-spore forming

  • WATER MOLDS-hyphae and spores-connected to great “Potato Famine”


Ch 20 protista

Slime molds


Ch 20 protista

Water mold


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