Kingdom Protista

1
Kingdom Protista

• Ch. 26 - Protozoan Emphasis

2
What Are Protists?

• Junk kingdom
• Eukaryotic
• Heterotrophic and/or autotrophic
• Single or multicellular
• Ancestors to animals, plants, fungi

3
Animal-like Protists
Protozoans

• Single celled
• Need water in some way
• water, bodies, soil
• Most heterotrophic, some photosynthetic
• Most free-living some parasitic

4
All Functions in One Cell

• Eating food waste vacuoles
• Homeostasis
• Contractile vacuoles
• Cysts - dormant harden covering no metabolic
  activity. (no food, no water, changes in pH,
  temp, between hosts)
• Movement
• Senses some have light sensitive eyespot

Amoeba
Paramecium
5
Plant-like Protists
- Photosynthesis - No true roots, stems,
leaves
Green Algae
Golden Algae
Red Algae
Brown Algae
6
Fungi-like Protists

• Heterotrophic
• Decomposers
• No cell walls

Slime Molds
Water Molds
7
Reproduction

• All reproduce ASEXUALLY
• Binary Fission - divides into 2 identical
  individuals.
• Multiple Fission - results in a many identical
  individuals

8
Some reproduce SEXUALLY

• Conjugation - Opposite mating strains pair and
  exchange genetic material (DNA)

9
Pond VS. Sewer Water Lab

• Make wet mounts of both types of water
• Draw organisms and make observations
• Hetero or auto?
• Type of movement?
• Protist, protozoan, or other?
• Try to find 3 from each type water
• Summarize major differences in critter type
  between two water sources.