1. ALGAE
Plantlike Protists

2. ALGAE Plantlike Photosynthetic Some are capable of moving
Unicellular and multicellular phyla

3. Unicellular Algae 4 phyla of unicellular algae: 1)Euglenophyta
2)Chrysophyta
3)Bacillariophyta
4)Pyrrophyta

4. Euglenophytes Phylum Euglenophyta Have 2 flagella No cell wall
Example: Euglena

5. Chrysophytes Phylum Chrysophyta Golden algae
Have golden colored chloroplasts
Store food in the form of oil

6. Diatoms Phylum Bacilliariophyta
Thin delicate cell walls rich in Si (silicon)
Cell walls are 2 sided like a petri dish
Diatomaceous earth: used in toothpaste, reflective, and cleansers
All live in salt water

7. Dinoflagellates Belong to phylum Pyrrophyta Use 2 flagella
most are photosynthetic
Covered by cellulose plates
Many are bioluminescent
Cause “red tide”

8. Ecology of Unicellular Algae
Important part of water ecosystems
Make up much of the phytoplankton that serve as the basis of food chains in water environments
Produce O2
Algal blooms may deplete water of nutrients and oxygen (red tide)