Transcript What can you say about Animal-like protists based on what you

What are Animal-like
protists?
Animal-Like
Protists
• Called Protozoas
• Single-celled
• Some parasites
• 4 Groups: amoebalike protists, flagellates,
cilliates, & spore-forming protists
Ameobalike
Protists
• Soft, jelly-like
• Found in fresh/salt water, soil, animals as
parasites.
• contractile vacuoles
• Pseudopodia: false feet
Feeding Amoebas
Engulf food
1.
2.
Senses food.
Surrounds bacteria or smaller protists with
pseudopodia making a food vacuole.
• Some parasitic amoebas live in human
intestines and cause amebic dysentery
(painful bleeding ulcers).
Protozoa with Shells
Radiolarians
• Have an outer shell
made of silica
Foraminiferans
• Have snail-like shells
made of calcium
carbonate
Flagellates
• Have flagellums to move.
• Live in water.
• Some are parasites that cause dieases.
Ex. Giardia Lamblia (diarrhea)
•Some have symbiotic relationships.
Ex. Live in guts of termites to digest
wood.
Ciliates
• Have 100’s of hair-like structures called
cilia.
• Cilia: move, help it get food, beat up to 60
x’s a second.
Ex: Paramecium
Paramecium Have 2 Nucleus
Macronucleus
•
Large nucleus
•Controls the
functions of
the cell.
Micronucleus
•
Smaller nucleus
•Passes genetic
material during
reproduction
Protist Reproduction
Asexually
• Offspring come from
just 1 parent using
fission
Sexually
• Offspring come from
2 parents.
Ex. Paramecium use
Ex. Euglena and amoebas
conjugation to make 4
total organisms!
Spore-Forming Protists
• Parasites
• Have 2 hosts.
Ex. Plasmodium Vivax (Malaria)
Malaria has 2 hosts!
The mosquito and you!