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Protozoa Phyla. List of Phyla. Amoeba-like organisms (e.g., Amoeba ) Phylum Euglenozoa Subphylum Euglenida (e.g., Euglena ) Subphylum Kinetoplasta (e.g., Trypanosoma ) Phylum Chlorophyta (e.g., Volvox ) Phylum Apicomplexa (e.g., Plasmodium ) Phylum Ciliophora (e.g., Paramecium ).

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list of phyla
List of Phyla
  • Amoeba-like organisms (e.g., Amoeba)
  • Phylum Euglenozoa
    • Subphylum Euglenida (e.g., Euglena)
    • Subphylum Kinetoplasta (e.g., Trypanosoma)
  • Phylum Chlorophyta (e.g., Volvox)
  • Phylum Apicomplexa (e.g., Plasmodium)
  • Phylum Ciliophora (e.g., Paramecium)
general characteristics
General Characteristics
  • Single-celled or unicellular organisms; some live in colonies;
  • Size = microscopic (3 to 1,000 microns).
  • No germ layers, tissues, or organs;
  • However, specialized intracellular "organelles" are present
general characteristics4
General Characteristics
  • Locomotion by pseudopodia, flagella, or cilia.
  • Symmetry = all types (bilateral, radial, spherical, or asymmetrical)
  • Free living, commensal, parasitic, or mutualistic
  • Mostly naked, but few have simple protective exoskeletons (tests). Ex. = Arcella
general characteristics5
General Characteristics
  • Nutrition = autotrophic (holophytic), saprozoic, saprophytic, or holozoic.
  • Reproduction: asexual = longitudinal and transverse binary fission, budding,
  • Sexual = sporogony, and autogamy
amoeba like organisms7
Amoeba-like organisms
  • Organisms move by pseudopodia, flagella, or a combination
  • Monomorphic nuclei
  • Genera
    • Amoeba- without a test, naked
    • Arcella- with a calcareous test
amoeba
Amoeba

Pseudopod

Food Vacuole

Contractile Vacuole

Nucleus

Phagocytosis

Hyaline Cap

figure 11 05
Figure 11.05

Amoeba hunting

food

arcella
Arcella

Side View

Test

Pseudopod

arcella12
Arcella

Nucleus

Top View

phylum euglenozoa
Phylum Euglenozoa
  • Organisms move by one or two flagella
  • Monomorphic nuclei
  • Capable of photosynthesis; chloroplasts usually present
subphylum euglenida
Subphylum Euglenida
  • Plant like organisms
  • Solitary
  • Can photosynthesize
euglena
Euglena

Chloroplasts

Contractile Vacuole

Flagellum not

visible

Stigma

subphylum kinetoplasta
Subphylum Kinetoplasta
  • Organisms are only heterotrophic
  • No chloroplasts present
  • all parasitic

Red Blood Cells

Trypanosoma smear – cause of sleeping sickness

Organism

trypanasoma
Trypanasoma

Trypanosoma organism

Red Blood Cells

phylum chlorophyta
Phylum Chlorophyta
  • Flagellated single or colonial organisms
  • Are autotrophic
  • Have chloroplasts with chlorophyll
  • Genetically different from Euglenozoa
volvox
Volvox

Zygote

Egg

Mother

Colony

slide22

Daughter Colonies

Mother Colony

Nuclei of individual

cells

phylum apicomplexa
Phylum Apicomplexa
  • organisms do not have locomotor structures;
  • all species are parasitic
  • asexual reproduction involves schizogony

Plasmodium smear – cause of Malaria

slide24

Final Host

Plasmodium – agent

For malaria

Vector

slide25

Ring stage

trophozoite

merozoite

Red blood cell

Trophozooite

slide26

Ring stage in red blood cell

Ring stage – Early Trophozoite

slide27

Schizont with merozoites in red blood cell

Red blood cell

Merozoites in the Schizont

slide28

Female

Male

Gametocytes

phylum ciliophora the ciliates
Phylum CiliophoraThe Ciliates
  • Organisms move by cilia
  • Usually two sizes of nuclei
  • Macronucleus and micronucleus
  • Reproduction usually by transverse binary fission
  • but sexual reproduction by conjugation