Protists

Protists!!!

Protists

Protists can be defined as single-celled organisms that contain a nucleus

Protists

Protists live in: Watery environments Moist soil Live inside larger organisms

Protists

Characteristics Can be autotrophic or heterotrophic Most live as individual cells Some live in large colonies

Protists

3 Major kinds of Protists Animallike Plantlike Funguslike

Protists

The animallike protists are broken down into 4 major groups Sarcodines Ciliates Zooflagellates Sporozoans

Sarcodines

Sarcodines can be identified by their pseudopods or “false-foot” Pseudopod is a footlike extension that an

amoeba uses to move and capture food Ex. Amoeba (NNN) VIDEO!!!

Ciliates

Ciliates have small hairlike projections on the outside of their cells Cilia act like tiny oars to move the

organism Ex. Paramecium Stentor, Spirostomum

Zooflagellates

Zooflagellates are animallike protists that move using a flagella (usually 1-8 flagella)! Many kinds live inside other organisms

as symbionts a few are parasites Ex. Giardia

Sporozoans

All sporozoans are parasites that feed on the cells and body fluids of their host animals

Ex. Plasmodium malaria

Plantlike Protists

Plantlike protists capture energy from the sun using chloroplasts

Plantlike Protists

Three major groups of plantlike protists Euglenas Diatoms Dinoflagellates (WHICH IS WHICH????)

Euglena

All possess two flagella, eyespots (why?!), and green structures used in photosynthesis

Diatoms

Diatoms are plantlike protists made of a tough glasslike, silicon material

Dinoflagellates

Dinoflagellates are plantlike protists that have two flagella and armor like cell walls

Fungus-like Protists

Fungus-like protists are heterotrophic, have cell walls, and use spores to reproduce. An example are slime molds.

Adios, ameobas…