- Eukaryotic

- Nucleus

- Oganelles

- 2 or more chromosomes

- most are single-celled for most of their life

Plant-like - autotrophic photosynthesizers

animal-like - heterotrophic hunters

fungus-like - heterotrophic decomposers

photosynthetic eukatryotes at the base of most aquatic food webs

produce most of the oxygen on the plant

1. Excavates
2. Euglenozoans
3. Stramenoplies
4. Alveolates
5. Rhizarians
6. Amoebozoans
7. Red Algae
8. Green Algae

Diplomonads

Parabasalids

Excavate

both free living and symbiotic species

two nuclei

multiple flagella

ex. Giardia - results from drinking untreated water causing diarrhea

Excavates

anaerobic

symbiotic

sometimes parasitic

ex. Trichmoanas Vaginlis - sexually transmitted; males can often be asymptomatic

Have distinctive mitochondria

move via flagella

mixed nutritional methods

Euglenids

Kinetoplastids

most are fresh water

have 1-3 flagella

primarily photosynthetic

lack a rigid cell wall

photoreceptor (eyespot)

pond dwellers

one flagellum

free living and symbiotic

some are parasitic

ex. Trypanosoma - causes sleeping sickness

many different forms; some living as multicellular colonies

mixed nutritional methods

water molds

diatoms

brown algae

Form a small division

cells can form colonies

filamentous bodies

mobile flagellated gametes

ex. Downy mildew

may be freshwater or marine

photosynthetic

have glass-like "shells" with perforation

Marine

Deep water - tidal

"brown" color caused by accesory pigments

cell wall has added polysaccharides

cells can form large colonies

Giant kelp Forest

Gas-bladders-keep the plant extending towards the surface

single celled

mixed nutritional methods (parasites)

varied forms of mobility

Dinoflagellates

Apicoplexans

Ciliates

marine

2 flagella

photosynthetic

cellulose cellwall

responsile for red tides - result in massive fish kills along the guld coast

all are heterotrophic parasites

have a mobile stage - Sporozites

ex. Plasmodium - causes malaria

Toxoplasma - vectors through cats

freshwater

heterotrophic

use cilia for movement and feeding (short hair-like filaments made of protein)

most complex of protozoa including an oral groove and an anal pore

most live as single cells

external shells

heterotrophic

use psudopodia for movement

Foraminiferans

Radiolarians

shell composed of CaCO3

many species characterized based on shell morphology

external shell composed of silica

many species characterized based on shell morphology

Have many different forms; some living as multicellular colonies

heterotrophic

move using pseudopodia

Amoebas

Slime molds

Acellular slime molds

Move and engulf food using pseudopodia

free living

can be parasitic

mobile feeding stage

stationary reproductive stage with a fruiting body that produces spores

plasmodial slime molds

acellular organism which looks like a very large multi-nucleated single cell

mainly marine

can form large colonies

deep water

red color (accessory pigments)

cell wall- added polysaccharides

held upright by CaCO3

Supports deep water food web

USED IN COSMETICS, ICE CREAM, PAINT, and SUSHI

some marine and MANY freshwater

unicellular and colony forms

flagellated

typicla chloroplasts

ANCESTOR OF LAND PLANTS

cell wall- ONLY CELLULOSE