Bio- Chapter 21

Protist

Protist

Diverse group of eukaryotic organisms that are are not plants, fungi or animals.

Spore (or cyst)

reproductive bodies that are dormant until conditions are favorable.

Supergroup Excavata

• Diplomonads

• Parabasalids

• Euglenozoans

Supergroup Chromalveolata

• Dinoflagellates

• Apicomplexans

• Ciliates

• Diatoms

• Golden and Brown Algae

Supergroup Rhizaria

• Cercozoans

• Foraminifera

• Radiolarians

Supergroup Archaeplastida

• Red and Green Algae

• Land plants

Supergroup Amoebozoa

• Amoeboid

• Slime molds

Supergroup Opisthokonta 

• Fungi

• Choanoflagellates

• Animals

How do algae differ from protozoans?

Algae are photoautotrophs, but protozoans are heterotrophs.

Subgroup: Diplomonad

• Double nuclei and flagella

• Giardia

Giardia

An example of a Diplomonad that causes severe diarrhea. 

Subgroup: Parabasilids

• Have fibers connecting the Golgi Apparatus to the Flagella

• Trichomonas Vaginalis

Trichomonas Vaginalis

A kind of STD that only shows symptoms in women

Sub group: Euglenozoans

• Odd Mitochondria

• Cell Wall

• Proteins circle the cell

• Odd way of swimming

• Euglenids and Kinoplastids

What are 3 distinctive features in the Supergroup Excavata?

1. Weird or absent Mitochondria

2. Distinct Flagella

3. Deep Oral Groves

Euglenids

• Single cell

• Freshwater

• Red eye spot near flagella

• Longitudinal cell division

Kinoplastids

• Parasitic

• Trypanosoma Brucei

• Trypanosoma Cruzi