SCIENCE 6 TOPIC 3

How Protozoans are Classified

BY THE WAY THEY MOVE

Sarcodines use pseudopods to move such as the amoeba

Ciliates use tiny hair-like structures called cilia to move like the paramecium

Flagellates use whip-like structures called flagella to move such as the calonympha found in the guts of termites

Sporazoa rely on winds, other organisms, etc. to move such as the case with the plasmodium responsible for malaria

The Five Types of Algae

Green algae are the most plant-like. Examples are the volvox, protococcus, and spirogyra

Brown and red algae a.k.a. as seaweed. Brown algae’s algin is used in cosmetics, foods, and fertilizers. Red algae’s agar is used for culture dishes and in certain foods as thickeners.

Euglenas are plant-like and animal-like algae because they carry-on photosynthesis and have the ability to move.

Dinoflagellates have two flagella and cause red tide.

Diatoms have a glass-like shell and make up the ocean’s primary source of plankton But what in the world is plankton???

Plankton make up the base of the ocean’s food chain

How are Fungi Classified? By the way they reproduce using spores

Thread-like, such as the black bread mold, reproduce by “naked” spores found at the end of hyphae

Sac fungi, such as yeast, reproduce by spores found in sac-like structures

Club fungi, such as “mushrooms”, reproduce by spores found on club shaped structures

The relationship that exists in a lichen

Homework Questions: 1. Based on what you know about how protozoans move, which group would you say is most common to live in the soil? Explain your answer. 2. Some protists and algaes move toward the light, and some away from the light. Which way do you think a euglena moves? Give reasons for your answer. 3. Why are fungi not grouped with the protozoan or the algaes? Why are they not grouped with the moneran (bacteria)?

Lichens show symbiosis in that both a fungus and an algae help each other to live (Not a lichen)HOW?

The fungus anchors and stores moisture for the algae

The algae supplies glucose by means of photosynthesis

LICHEN AS PIONEER ORGANISMS…

Lichen are the first to grow on rocks and break them down into simple soils so other plants can live there

The Slime Molds

“dog vomit” slime mold

Hyphae begin to grow up from the plasmodium

Mature hyphae with spores in a spore case

Hyphae begin to grow up from the plasmodium Mature hyphae with spores in a spore case Spores emerge

Hyphae begin to grow up from the plasmodium Mature hyphae with spores in a spore case Spores emerge Spores mature

Hyphae begin to grow up from the plasmodium Mature hyphae with spores in a spore case Spores emerge Spores mature Protist-like organism emerges

Hyphae begin to grow up from the plasmodium Mature hyphae with spores in a spore case Spores emerge Spores mature Protist-like organism emerges Male and female “Protists” carry slime mold DNA

Hyphae begin to grow up from the plasmodium Mature hyphae with spores in a spore case Spores emerge Spores mature Protist-like organism emerges Male and female “Protists” carry slime mold DNA Male and female “protists” merge sharing their DNA

Hyphae begin to grow up from the plasmodium Mature hyphae with spores in a spore case Spores emerge Spores mature Protist-like organism emerges Male and female “Protists” carry slime mold DNA Male and female “protists” merge sharing their DNA An amoeba –like protist forms

Hyphae begin to grow up from the plasmodium Mature hyphae with spores in a spore case Spores emerge Spores mature Protist-like organism emerges Male and female “Protists” carry slime mold DNA Male and female “protists” merge sharing their DNA An amoeba –like protist forms Many “amoebas” join together forming a plasmodium that oozes out in many directions

Hyphae begin to grow up from the plasmodium Mature hyphae with spores in a spore case Spores emerge Spores mature Protist-like organism emerges Male and female “Protists” carry slime mold DNA Male and female “protists” merge sharing their DNA An amoeba –like protist forms Many “amoebas” join together forming a plasmodium that oozes out in many directions

Hyphae begin to grow up from the plasmodium Mature hyphae with spores in a spore case Spores emerge Spores mature Protist-like organism emerges Male and female “Protists” carry slime mold DNA Male and female “protists” merge sharing their DNA An amoeba –like protist forms Many “amoebas” join together forming a plasmodium that oozes out in many directions FUNGI-LIKE

Hyphae begin to grow up from the plasmodium Mature hyphae with spores in a spore case Spores emerge Spores mature Protist-like organism emerges Male and female “Protists” carry slime mold DNA Male and female “protists” merge sharing their DNA An amoeba –like protist forms Many “amoebas” join together forming a plasmodium that oozes out in many directions FUNGI-LIKE PROTIST-LIKE