KINGDOM PROTISTA. KINGDOM PROTISTA PROTOZOANS “proto” = first “soion” = animal Unicellular organisms called protozoans likely the precursor to the.

Presentation on theme: "KINGDOM PROTISTA. KINGDOM PROTISTA PROTOZOANS “proto” = first “soion” = animal Unicellular organisms called protozoans likely the precursor to the."— Presentation transcript:

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2 KINGDOM PROTISTA

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4 PROTOZOANS “proto” = first “soion” = animal
Unicellular organisms called protozoans likely the precursor to the first animals to evolve Similar to animals Heterotrophic Movement Different than animals Unicellular vs. multicelluar

5 4 Types of Protozoans Classified by how they move
Sarcodians: move by cytoplasm Zooflagellates: move by flagella Ciliaphorans: move by cilia Sporozoans: do not move, are parasitic

6 Sarcodians Move by cytoplasm e.g. Ameba Youtube: Ameba Feeds

7 Zooflagellates Move by flagella e.g. Trypanosoma
African sleeping sickness

8 Ciliaphoranes Move by cilia e.g. Parmecium Youtube:

9 Sporozoans e.g. Plasmodium Do not move (are parasites) Malaria

10 Protozoan Summary Name Locomotion Examples Sarcodian
Move by extending cytoplasm Ameba Zooflagellates Move by flagella Trypanosoma Ciliaphorans Move by cilia Parmecium Sporozoans Do not move, are parasitic Plasmodium

11 Where do protozoans live?
Grow and reproduce only in wet environments!!

12 Importance of Protozoans
Food source for many organisms Part of phytoplankton: tiny organisms that float near the surface of oceans and lakes Control bacteria populations Act as scavengers Parasites

13 Algae Similar to plants because: Different than plants:
Perform photosynthesis Contain chlorophyll Many have celluose in cell walls Different than plants: All plants are multicellular while many algae are unicellular

14 Algae “plant-like” protists Multicellular Algae Unicellular Algae Brown Algae Dinoflagellates Euglenoids Diatoms Red Algae Green Algae

15 Unicellular Algae Dinoflagellates: Covered with cellulose plates
Have two flagella that spin the cell through the water Red tide: species of dinoflagellates, produces a neurotoxin that causes death of fish, birds, marine mammals, and other organisms

16 Unicellular Algae Diatoms: Covered with glass (silica) shell
No structures for movement Most abundant organisms in the ocean Deposits in earth used for detergents, insulation, and polishing agents in toothpaste

17 Unicellular Algae Euglenoids No rigid cell wall
(more “animal-like” in this way) Two flagella for movement Have chloroplasts and perform photosynthesis (more “plant-like” in this way)

18 Multicellular Algae Green Algae: Grow in ponds, moist soil, and
saltwater conditions Usually green and multicellular E.g. Volvox, Ulva “sea lettuce” MYA&feature=related 4&feature=related

19 Multicellular Algae Red Algae: Grow in warm saltwater conditions
Not always red – can be green, orange, or black

20 Multicellular Algae Brown Algae Live in cool saltwater habitats
Brown in color E.g. Giant kelps watch?v=u-6mYjgZ_5g

21 Importance of Algae Important part of plankton
Called “phytoplankton” because perform photosynthesis Phytoplankton produces much of oxygen in Earth’s atmosphere Food source for various organisms Provide habitats for many organisms

22 Importance of Algae Eutrophication: Red Algae
Addition of nutrients causes rapid algal growth Algae sink to bottom and die Most of water’s oxygen is them consumed in breaking down algae and reduce availability for aquatic species Red Algae “nori” used for sushi

23 Fungus-like Protists Most are decomposers
Protists rather than fungi because of chemical and structural differences Two main groups: Slime Molds Water Molds

24 Slime Molds Youtube:

25 Water Molds Habitat: Some parasitic
freshwater on decaying plants and animals Some parasitic E.g. Phytophthora (late blight of potatoes)

26 Ameba

27 Paramecium

28 Euglena

29 Diatoms