Characteristics

2. Characteristics • Mostly unicellular with a nucleus. Some multicellular algae. • May be producer, consumer, decomposer • 3 types ( fungus like, plant like, animal like)

3. Fungus Like • slime molds: can be uni-or multicellular, eat bacteria, yeast and decaying matter, form spores to reproduce. • ex. water molds: can be decomposers or parasites of plants or animals caused the potato famine.

4. Plant Like Algae • Produce most of the oxygen on earth • Important part of the food web • Food for animal like protists and others.

5. Green Algae some are microscopic and make up plankton that lives in ocean. - some are seaweed

6. Brown Algae • still has chlorophyll - ex. rockweed, has holdfasts that act like roots to hold it to rocks. - mostly in colder waters

7. Red Algae • red color allows it to absorb a part of the sunlight that can penetrate deep into the ocean. - some make substances called agar, for use by scientists, and in food. - mostly in warmer waters

8. Golden Algae • - ex. Diatoms: are glass-like • -when they die they form diatomaceous earth and that is used in toothpaste and scouring powder. • - also used in paint to help it reflect light for road stripes.

9. Fire Algae • - also called dinoflagellates, they have 2 flagella • - some cause "red tide", where they produce toxins that get in shellfish and make people sick. • - some have bioluminescence "having living light" and glow in the water

10. Euglenoids • - single cell that is plant and animal like: has chlorophyll, but also has a flagella for moving.

11. Pair/ Share • With your elbow partner, discuss 2 reasons plant like protists are helpful. • Then give 2 reasons they can be harmful. • What was the most interesting thing you learned about plant like protists.

12. Animal Like Protists or Protozoans • Are consumers • Important part of the food web • Grouped according to how they move.

13. Amoeba • - have pseudopods or "false feet" that surround food, then vacuoles release enzymes to digest it. • - contractile vacuole pumps out water • - O2 and CO2 go in and out of membrane • - reproduce by binary fission

14. Ciliates • - Ex. paramecium • - covered with small hairs called cilia that help it move and push food toward its oral groove (mouth).  

15. Flagellates • ex. Giardia lamblia • - use flagella, a whip like structure to move • - can live in water and get in digestive tracts of vertebrates and cause severe stomach upset.

16. Sporozoans • ex. Plasmodium, carries malaria through mosquitoes • - are parasites and live off other organisms • - do not move or eat on own • - reproduce by spores • - if an infected mosquito bites you, it will release sporozoans that go into your liver, form spores that invade the red blood cells and destroy them. If a mosquito then bites you, it becomes a carrier

18. Looking Further • With your microscope partner, draw and label the following Protists: • 1. Diatom • 2. Green algae • 3. Amoeba • 4. Paramecium • 5. Prepare a drop of pond water and identify and draw at least 5 types of plankton.