Protozoans

0.0(0)

Studied by 1 person

0.0(0)

Call Kai

Learn

Practice Test

Spaced Repetition

Match

Flashcards

Knowt Play

Card Sorting

1/12

Earn XP

Description and Tags

Main phyla & key characteristics

Study Analytics

Name	Mastery	Learn	Test	Matching	Spaced

No study sessions yet.

13 Terms

New cards

Phylum Chlorophyta (Green Algae)

Autotrophic, unicellular & colonial (Chlamydomonas, Volvox).
Chloroplasts; sexual + asexual reproduction.

<ul><li><p>Autotrophic, unicellular & colonial (<em>Chlamydomonas, Volvox</em>).</p></li><li><p>Chloroplasts; sexual + asexual reproduction.</p></li></ul><p></p>

New cards

Phylum Dinoflagellata

2 flagella (equatorial + longitudinal).
Many bioluminescent, cause red tides.
Symbionts (Zooxanthellae in corals).

New cards

Phylum Euglenozoa

Euglena: mixotrophic, eyespot (stigma).
2 flagella (1 long, 1 short).
Asexual via binary fission.

<ul><li><p><em>Euglena</em>: mixotrophic, eyespot (stigma).</p></li><li><p>2 flagella (1 long, 1 short).</p></li><li><p>Asexual via binary fission.</p></li></ul><p></p>

New cards

Phylum Euglenozoa:

Class Kinetoplastida

Trypanosoma (sleeping sickness), Leishmania

<p><em>Trypanosoma</em> (sleeping sickness), <em>Leishmania</em></p>

New cards

Phylum Sarcomastigophora

Order Diplomonadida: Giardia (2 nuclei, 8 flagella, adhesive disc).
Causes giardiasis (intestinal illness).

<ul><li><p><em>Order Diplomonadida</em>: <em>Giardia</em> (2 nuclei, 8 flagella, adhesive disc).</p></li><li><p>Causes giardiasis (intestinal illness).</p></li></ul><p></p>

New cards

Phylum Rhizopoda (Amoebas)

Move by pseudopodia (lobopodia, filopodia, reticulopodia, axopodia).
Example: Amoeba, Arcella, Difflugia.
Pathogens: Naegleria fowleri, Entamoeba histolytica.

<ul><li><p>Move by pseudopodia (lobopodia, filopodia, reticulopodia, axopodia).</p></li><li><p>Example: <em>Amoeba, Arcella, Difflugia</em>.</p></li><li><p>Pathogens: <em>Naegleria fowleri</em>, <em>Entamoeba histolytica</em>.</p></li></ul><p> </p>

New cards

Phylum Foraminifera

Marine, CaCO₃ shells (reticulopodia).
Major contributors to chalk/limestone; great fossil record.

<ul><li><p>Marine, CaCO₃ shells (reticulopodia).</p></li><li><p>Major contributors to chalk/limestone; great fossil record.</p></li></ul><p></p>

New cards

Phylum Radiolaria

Silica skeletons, axopodia for prey capture.
Marine, pelagic; shells form radiolarian ooze.

<ul><li><p>Silica skeletons, axopodia for prey capture.</p></li><li><p>Marine, pelagic; shells form radiolarian ooze.</p></li></ul><p></p>

New cards

Phylum Heliozoa

“Sun-animalcules.”
Axopodia radiating from spherical cell.
Freshwater & marine (Actinosphaerium).

<ul><li><p>“Sun-animalcules.”</p></li><li><p>Axopodia radiating from spherical cell.</p></li><li><p>Freshwater & marine (<em>Actinosphaerium</em>).</p></li></ul><p></p>

New cards

Phylum Apicomplexa (Sporozoans)

All parasitic, intracellular.
Apical complex for host cell entry.
Complex life cycle (sexual + asexual).
Ex: Plasmodium (malaria), Toxoplasma gondii.

<ul><li><p>All parasitic, intracellular.</p></li><li><p>Apical complex for host cell entry.</p></li><li><p>Complex life cycle (sexual + asexual).</p></li><li><p>Ex: <em>Plasmodium</em> (malaria), <em>Toxoplasma gondii</em>.</p></li></ul><p></p>

New cards

Phylum Apicomplexa:

Class Coccidea

includes Plasmodium & Toxoplasma.

New cards

Phylum Parabasilida

Have axostyle + parabasal body.
Trichomonas vaginalis (STD), Trichonympha (termite symbiont)

<ul><li><p>Have axostyle + parabasal body.</p></li><li><p><em>Trichomonas vaginalis</em> (STD), <em>Trichonympha</em> (termite symbiont)</p></li></ul><p></p>

New cards

Phylum Ciliophora (Ciliates)

Most diverse protozoans; cilia for feeding/movement.
Dimorphic nuclei (macro + micro).
Example: Paramecium, Stentor, Didinium, Vorticella, Balantidium coli.

<ul><li><p>Most diverse protozoans; cilia for feeding/movement.</p></li><li><p>Dimorphic nuclei (macro + micro).</p></li><li><p>Example: <em>Paramecium, Stentor, Didinium, Vorticella, Balantidium coli</em>.</p></li></ul><p></p>