Kingdom Protista

Kingdom protists is the most diverse of all the Kingdoms

A Protist is a ____________ that is not officially a Plant,

________, or _________.They lack one or more

characteristics that would place them in these categories.

Protist Classification

• Protists can be classified into three categories loosely on how they obtain food. The three categories of Protists are;

–Animal- Like–Plant- Like–Fungus- Like

Animal- Like Protists

• Animal- Like Protists can all move and are Heterotrophs.

• All Animal-Like Protists are unicellular, while animals are multi-cellular

Plant-like Protists

• Plant-like protists make their own food by photosynthesis just as plants do.

• All True plants have roots, stems and leaves, and are multicellular

• Plant like protists can be unicellular, colonial, or multicellular

Fungus-Like Protists • Fungus-Like Protists decompose dead

organisms. There protists were once placed in the same kingdom as true fungi.

• However, fungus-like Protists CAN move during part of their life cycle, whereas true fungi can NOT.

Animal-Like Protists aka Protozoan's

• Protozoan are often classified by how they move.

• Zooflagellates are animal-like protists that have flagella at some point in their life cycle.

• More than 2000 species of Zooflagellates exist.

• Some Zooflagellates cause disease• Ex. African sleeping sickness

Animal-Like Protists AKA Protozoans

• Some protozoans called pseudopodia move using a pseudopod which means “false foot”

• An amoeba can live in freshwater, salt water or soil. Foraminifera live in salt water

• YouTube - Amoeba in motion

Animal-Like Protists AKA Protozoans

• Protozoans that move using cilia are called Ciliates (shocking). Cilia are short hair like structures that that help protists swim and capture food. YouTube - Paramecium Feeding

• Some ciliates are parasites that cause disease, most are free living found in common pond water

Plant-Like Protista

• Unlike Plants which are all multi cellular; plant like protists can be unicellular, colonial, or multicellular.

• Photosynthetic plant-like protists are called Algae.

• Algae are not true plants because they do not have roots, stems or leaves

Plant-Like Protista

• Euglenoids are single celled plant-like protista that swim with the aid of one or more flagella

• http://www.youtube.com/watch?v=0rNI8Bos_BQ

Plant-Like Protista

• Dinoflagellates- Most live in salt water. Some produce toxins that can produce red tides and kill large numbers of fish

Plant-Like Protists

• Diatoms- single celled, covered with delicate glasslike shells. They can be found in fresh, or salt water.

• Diatoms produce approx half of the earths atmospheric oxygen

Diatoms are soo Pretty !

Green Algae

• Most species of green algae are aquatic. • http://www.youtube.com/watch?v=u9WUbDP

VvKA

Brown Algae

• Brown algae include the giant kelp that form thick underwater forests.

Red Algae

• This group of algae can grown a deeper depths than any other algae. It’s red pigments are able to absorb the blue light that reaches the deepest level of the ocean

• http://www.youtube.com/watch?v=G9GVM1RYEMU

Fungus Like Protista

• Fungus like protists are valuable decomposers in the ecosystems. Two types of Fungus like protists are – Slime Molds & Water Molds

Slime Molds

http://www.youtube.com/watch?v=GScyw3ammmk

Water Molds