spirogyra

Volvox is a Chlorophyte that lives as a spherical colony. Each alga within the colony has two flagella and are connected to each other by thin strands of cytoplasm. The colony  moves as one. The colonies have spheres inside called 'daughter' colonies involved in  asexual reproduction.

euglena

amoeba

physarum

formanifera

Diatoms have a cell wall made of silicon dioxide =
glass houses. Diatoms
produce oil but other photosynthetic algae 
make starch. In streams, diatoms cover rocks
that makes them slippery. Diatoms serve as a primary food source for zooplankton and is a
major oxygen producer. 

volvox

chlamydomonase 

stentor

there are over 400 species of Spirogyra,
a freshwater green algae that is found in ponds, ditches and
​the edge of lakes. 

plasmodium

pseudopods

Domain Eukarya
Kingdom Protista

trympanosoma

red algae

ciliates

diatoms

saprobes

heterotrophic protists:

​moves w/ pseudopodia:
amoeba
radiolaria
formainifera

moves w/ cilia:
paramecium
stentor
vorticella
trympanosoma

non-motile:
plasmodium

paramecium

non-motile

vorticella

Fucus is a kelp (also called rockweed). Fucus is found along rocky seacoasts and salt marshes. This algae is a source of alginates, a product similar to agar. 

The red color
is due to pigments
which mask the other pigments present. 

ecological significance

fucus

radiolaris

autotrophic protists:
filamentous green algae: spirogyra
unicellular green algae: chlamydomonas
colonial green algae: volvox
euglena
diatoms
brown algae: fucus
brown algae: sargassum
red algae​

sargassum

Chlamydomonas, over 150 species, are
single-celled green algae with two flagella that is found in ponds, the soil and ditches.

Euglena are elongated cells that exhibit a nucleus, chloroplasts, a contractile vacuole, flagella, and an
eyespot.