PROTISTS

THE PROTISTSANIMAL-LIKE PROTISTS

PLANTLIKE PROTISTS

FUNGILIKE PROTISTS

GROUP Ciliates, amoebas, apicomplexans, and zooflagellates

Euglenoids, diatoms, dinoflagellates, algae

Slime molds, water molds, and downy mildews

EXAMPLE

Amoeba Green Algae Slime Mold

DISTINGUISHING CHARACTERISITICS

• Considered animal-like because they consume other organisms for food• Some are parasites

• Considered plant-like because they make their own food through photosynthesis• Some consume other organisms or are parasites when light is unavailable

• Considered funguslike because they feed on decaying organic matter and absorb nutrients through their cell walls• Some slime olmds consume other organisms and a few are parasitic

HABITATS• Protists can be found typically in damp or aquatic environments.

• Such as decaying leaves, damp soil, ponds, streams, and oceans.

• Microsporidia are microscopic protozoans that cause disease in insects and some species are used as insecticides.

• Green algae lives in the hair of sloths and helps them blend in with their environment. (symbiotic relationship)

ANIMAL LIKE PROTISTSPROTOZOANS

Ciliophora Sarcodina Apicomplexa

Zoomastigina

Group Paramecium, Stentor, Trichodina pediculus

Amoeba, Radiolarians

Plasmodium (malaria causing)

Three species causes infectious disease in humans that are often fatal

Example

Paramecium Amoeba Malaria Infected Cells

Tsetes Fly

Distinguishing Chracterisitics

• All have numerous short, hairlike projections called cilia for movement• Most aquatic environements, oceans, lakes, rivers and mud• Reproduce asexually be by binary fission

• All use pseudopods for feeding and locomotion.• Most found in saltwater• Reproduce asexually

• Also known as sporozoans because they produce spores at some point in their life.• Spores are reproductive cells that form without fertilization.• All sporozoans are parasitic

• Also known as zooflagellates because all use a flagella for movement.

PLANTLIKE PROTISTSALGAE

Diatoms Dinoflagellates

Euglenoids Algae

Group Chlorophyll & secondary pigment called Carotenoids (golden yellow)

Some have red photosynthetic pigments

Share characteristics of both plants and animals

Brown, Green, Red

Example

Distinguishing Characteristics

• Unicellular algae•Photosynthetic autotrophs• Convert food to oil• Reproduce sexually and asexually

• Most unicellular & have 2 flagella• Some are bioluminescent• Most found in saltwater• Some autotrophic, some heterotrophic

• Unicellular• Most found in freshwater• Cell wall is replaced by a pellicle, which allows them to crawl through mud

• Brown algae is massive, kelp• Green algae is diverse with over 7000 species• Red algae have phycobilin that allow them to absorb green, violet, & blue light that can penetrate water to a depth of 100m!

FUNGUS LIKE PROTISTSAcellular Slime

MoldCellular Slime

MoldWater Molds & Downy Mildew

Group Go through a stage in their life cycle in which the nucleus divides but no internal wall forms, resulting in a mass of cytoplasm with multiple nuclei

Spend most of their life as single amoeba-like cells with no flagella

Close to a fungus, but water molds produce flagellated reproductive cells and cells walls are composed of cellulose

Example

Distinguishing Chracteristics

• Feed on decaying matter• Reproduce using spores• Cell walls contain cellulose

• Creep over rich, moist soil & engulf bacteria• Reproduce sexually and asexually

• Live in water or damp places• Some absorb nutrients from water or soil & some from other organisims

POND WATER LAB

POND WATER ORGANISMS TO LOOK FOR: