THE KINGDOM PROTISTA The Protozoans PROTOZOAN CHARACTERISTICS animalcules

THE KINGDOM PROTISTA The Protozoans PROTOZOAN CHARACTERISTICS  animalcules

THE KINGDOM PROTISTA The Protozoans PROTOZOAN CHARACTERISTICS

animalcules first animals eukaryotic motile often rapid movement aquatic microscopic unicellular

a few colonial heterotrophic some parasitic, some beneficial to host PROTOZOAN CHARACTERISTICS (CONTINUED) primarily asexual reproduction

(binary fission) exchange of genetic information possible in a few species eyespots to detect light intensity cysts protect during harsh environmental conditions Members of the kingdom Protista are a. prokaryotic.

b. eukaryotic. PROTOZOAN PHYLA Sarcodina Ciliophora Zoomastigina Sporozoa chart on page 257 compares the 4 phyla

PHYLUM SARCODINA CHARACTERISTICS common name - sarcodines no standard body shape flexible plasma membrane heterotrophoic, some parasitic movement by pseudopodia false feet (amoeboid

movement) Examples: amoebas, GENUS AMOEBA Cytoplasm is divided into 2 parts: endoplasm the dense cytoplasm found in the interior of the cell

ectoplasm the thin cytoplasm on the outer perimeter of the cell GENUS AMOEBA nucleus controls metabolism contractile vacuole eliminates water, regulates homeostasis

amoeboid movement constant change in shape by formation of pseudopodia pseudopod extension of a cell used for locomotion and engulfing substances GENUS AMOEBA

nutrition pseudopodia engulf food and form food vacuoles taxis a response to a stimulus reproduction binary fission no known form of sexual reproduction form cysts

Show youtube videos A contractile vacuole a. engulfs food particles. b. collects and eliminates wastes. c. collects and eliminates excess water. d. keeps the cell rigid.

What term describes this process of engulfing food? a. phagocytosis b. pinocytosis c. autophagy d. egestion AMOEBIC DYSENTERY Most

sarcodines are nonpathogenic to humans Entamoeba histolytica spread by contaminated food and water symptoms intestinal ulcers bloody diarrhea possibly death (not likely today)

PHYLUM CILIOPHORA CHARACTERISTICS common name ciliates heterotrophic some parasitic cilia free-swimming

Examples: Paramecium, Stentor, Vorticella GENUS PARAMECIUM macronucleus contains multiple copies of genetic material micronucleus

functions exchange of genetic information in sexual reproduction GENUS PARAMECIUM pellicle firm yet flexible outer covering results in slipper shape cilia

completely covers Paramecium Enables to turn, rotate, and travel in any direction oral groove opening for the passage of food leads through the mouth pore to the gullet GENUS PARAMECIUM avoiding reaction

movement trichocysts discharge filaments in response to stimuli (defense mechanism) reproduction asexual binary fission sexual conjugation Show youtube video macronucle

us micronucle us contractile vacuole food oral groove

mouth pore vacuole gullet PHYLUM SPOROZOA CHARACTERISTICS common name sporozoans heterotrophic

no special mode of locomotion form spores asexual & sexual reproduction nutrition all sporozoans are parasitic. Example: Plasmodium MALARIA caused by a sporozoan

Plasmodium carried by a female mosquito Anopheles symptoms chills and high fever Anemia

PHYLUM ZOOMASTIGINA CHARACTERISTICS common name zooflagellates heterotrophic, most unicellular some parasitic flagella for movement reproduction

asexual by binary fission some sexual Examples: Trichonympha,Trypanosoma,

AFRICAN SLEEPING SICKNESS carried by the tsetse fly symptoms brain inflammation mental lethargy sleepiness possibly death

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