Kingdom Protista

Kingdom ProtistaKingdom Protista

Pond Water ProtistsPond Water Protists

If you look at a drop of pond water under a microscope, all the "little creatures" you see swimming around are protists.

What Makes Protists so cool?What Makes Protists so cool?

Protists first appeared in the fossil records about 1.5 billion years ago.

Demonstrate an important evolutionary advancement; a membrane bound nucleus.

This means, all Protists are eukaryotic

BackgroundBackground

Have ribosomes, mitochondria, and lysosomes.

Members of the Kingdom Protista are the simplest of the eukaryotes.

More Protist BackgroundMore Protist Background

Protists can be unicellular, multicellular or colonial.

Reproduce sexually and asexually. Require an aquatic environment. There are three types: Plant-like,

animal-like, and fungus-like

Why are they important?Why are they important?

Autotrophic protists, like phytoplankton, produce a significant portion of the Earth’s oxygen.

Play an important role in the carbon cycle.

Important producers and consumers in food chains.

Kingdom Protista-The Kingdom Protista-The Phylums!Phylums!

“Protozoans” Slime MoldsAlgae

ProtozoansProtozoansThe “animal-like” protistsThe “animal-like” protists

How are all Protozoans alike?How are all Protozoans alike?

Heterotrophs Grouped according to how they MOVE Hunt and gather other microbes Digest in a vacuole filled with enzymes A couple of the Phylum of protozoan….

Phylum Rhizopoda-AmoebaPhylum Rhizopoda-Amoeba

•Thrive in fresh water, salt water and soil.

•Many are motile, with pseudopods used for locomotion.

•Few parasitic species found in animal intestines.

Phylum Ciliophora - ParameciumPhylum Ciliophora - Paramecium•Most complex and advanced•Have hairlike structurescalled cilia which are used formovement and in feeding.•Reproduce through binary fission and conjugation. (just like….?)

Phylum Phylum ZoomastiginaZoomastigina flagella salt and fresh water. Most are

parasitic and cause disease in animals.

Asexual reproduction Form cysts that allow them to

be spread from host to host. Giardia

Phylum SporozoaPhylum Sporozoa Lack means of independent locomotion. Exclusively parasitic. Depend entirely upon the body fluids of

their hosts for movement. Have a spore-like stage.

Plantlike ProtistsPlantlike Protists

How are all plant-like protists alike?How are all plant-like protists alike?

Plant-like protists are algae Eukaryotic autotrophs Foundation of food webs Produce the majority of Earth’s oxygen! Split by UNICELLULAR algae and

MULTICELLULAR algae

Phylum of Algae-UnicellularPhylum of Algae-Unicellular

Phylum Phylum BacillariophytaBacillariophyta--DiatomsDiatoms

•Fresh and salt water

•Autotrophic, contain chlorophyll.

•Many are encased in shells or skeletons of silica.

DIATOMS

Phylum Pyrrophyta - Phylum Pyrrophyta - DinoflagellatesDinoflagellates

•Autotrophs, contain chlorophyll and red pigments.

•Can contaminate shell fish.

•2 flagella set at right angles

Article on Bioluminescence

Phylum Euglenophyta - Phylum Euglenophyta - EuglenaEuglena

•Both heterotrophic and autotrophic.

•Have an eye spot which is sensitive to light.

•Reproduce sexually and asexually.

•Evolutionary link between plants and animals.

Multicellular Algae-by color!Multicellular Algae-by color!

Phylum Rhodophyta- RedPhylum Rhodophyta- Red They are found in warm or cold marine

environments along coast lines in deeper water.

Their pigments absorb green, violet, and blue light waves. (LEAVING RED!) These light waves are able to penetrate below 100 meters.

Phylum Phaeophyta-brownPhylum Phaeophyta-brown They are found in coolsaltwater along rocky coasts.

Giant Kelp are the largest and most complex brown algae. They have hold fasts and air bladders.

Phylum Chlorophyta-GreenPhylum Chlorophyta-Green

Most green algae are found in freshwater

A Volvox is a hollow ball composed of hundreds of flagellated cells in a single layer.

Fungus-Like ProtistsFungus-Like Protists

Slime MoldsSlime Molds Slime Molds-fungi-like During good times, they live as

independent, amoeba-like cells, dining on fungi and bacteria.

Hard times- individual cells begin gathering together to form a single structure.

The new communal structure=a slug

The slug oozes toward light. When the communal cells sense that they've come across more food or better conditions, the slug stops

Clip from Planet Earth