1. The Miscellaneous Category
Kingdom Protista
The Miscellaneous Category

2. Protists: A varied kingdom with 11 phyla that have little in common!
Incredible biodiversity  occupying almost every niche and habitat!
Animal like (4)
Paramecium
Plant like (6)
volvox
Protists
Fungi like
(1)
Hartmanella vermiformis Protozoan

3. Features
Most are unicellular. Some form colonies of identical cells. A few are multi-cellular but don’t form tissue (algae)
Cells are eukaryotic – membrane- bound nucleus, most have vacuoles & mitochondria, some have chloroplasts.
Cell reproduce asexually through binary fission. Some exchange DNA via conjugation
Cells thrive in moist environments (fresh or salt water, animal fluids & very damp terrestrial environment)

4. Structure (Figure 2, Pg. 128)
eyespot
Mitochondrion

5. Plant-Like Protists
Spirogyra
diatoms
Polysiphonia
Red Algae
Contain chlorophyll  can photosynthesize (autotrophs)
But… during dark periods, can engulf nutrients from their environment (heterotrophs)
Most have 2 flagella for locomotion
Examples: species of green, brown and red algae

6. Animal-Like Protists
Amoeba proteus
All are heterotrophs  can gather nutrients by engulfing their food or by absorbing it through their membranes
Classified by type of locomotion (cilia and flagella)
Reproduce by binary fission
Examples:
Amoeba (feed by phagocytosis
Paramecium (feeds via an oral groove)
Arcella, a common shelled amoeba 
Paramecium

7. Importance of Protists:
Provide the critical base to most food webs
Algae
Primary food producers in aquatic food chains
Provide 80% of the world’s oxygen
Used by humans as food, fertilizers, drugs, cosmetics, etc…

8. HELP ME!
The End!!!