1. Animal-Like Protists
Chapter 19
p.540

2. 4 Phyla of Animal Like Protists
Phylum Ciliophora
Phylum Zoomastigina
Phylum Sarcodina
Phylum Apicomplexa (Sporazoa)

3. Protozoans-First Animals (4 Phyla)
Phylum Ciliophora – solitary or colonial organisms that bear cilia (ciliates)
Cilia – hairlike structures that aid in mvt.
Fresh and salt water
Free living not a parasite or symbiont
Sexual and asexual Repro
Paramecium

6. Paramecia and their organs
Large! 350 micrometers in length
Outer layer =pellicle
folded in a repeating pattern; looks quilt-like
Trichocysts
embedded in the pellicle – are discharged for defense!
(spear!)
Macronucleus and Micronucleus
genetic info
Gullet
indentation used for trapping food
Cilia beat water and bits of food (bacteria)

7. Organs continued Food Vacuoles
cavities at the base of the gullet – food is forced into them
They break off and fuse w/ lysosomes
Lysosomes contain digestive enzymes
Anal Pore
Food vacuole fuses with anal pore
Anal pore releases wastes into environment
Contractile Vacuoles – pumps water out of the cell when full

9. Structure of a paramecium: large ciliate protozoan that lives in stagnant freshwater.
Ectoplasm: superficial layer of a paramecium.
Endoplasm: central part of a paramecium.

10. Binary Fission

11. conjugation
only genetic information is being exchanged

12. Animal-like Protists - Flagellates
Phylum Zoomastigina (Flagellates)
Use flagella for movement
Absorb food directly through their cell membranes
Live in ponds or streams where they live off of dead organisms
Others live in the bodies of animals
Asexual Reproduction – some have a sexual phase to their life cycle

13. Flagellates
Termites are able to digest wood (cellulose) because of flagellates Trichonympha that live in the digestive tract
Trypanosomes are flagellates that are parasitic.
They live in the blood stream of humans and cause African Sleeping Sickness
Animal Planet

16. Animal Like Protists - Sarcodines
Phylum Sarcodina
Cytoplasm projections called pseudopods (false feet) aid in movement (cytoplasm)
Best Known – Amebas (“change”)
No cilia, Flagella, Cell Walls or cell shape
Foraminifera – also sarcodines – more common
Shells line ocean floor in warmer regions
Heliozoans – also sarcodines
Sun animals (made up of silica)

19. Animal-Like Protists – Sporozoans(Apicomplexa)
Phylum Sporozoans(Apicomplexa) - parasites
No structures for movement
Reproduce by creating spores
Can infect fish, worms, insects, birds and humans (MALARIA)
complex life cycle involving more than one host
Video

20. Plasmodium & red blood cells