Protists

Question 1

Most eukaryotes are…

Answer 1

Single-celled organisms

Question 2

Organisms in most eukaryotic lineages are…

Answer 2

Protists

Question 3

Heterotrophs

Answer 3

An organism that cannot produce its own food, instead taking nutrition from other sources

Question 4

Ingestive heterotrophs

Answer 4

Ingest nutrients and subsequently digest them (certain protists and animals)

Question 5

Absorptive heterotrophs

Answer 5

Digestion occurs outside of organism by secreting enzymes into the surrounding environment (fungi)

Question 6

Autotrophs

Answer 6

an organism that can produce its own food (plants and certain protists)

Question 7

Mixotrophs

Answer 7

uses both heterotrophy and autotrophy (certain protists)

Question 8

Excavata traits

Answer 8

Flagella
All types of -trophs
Mostly unicellular
Both sexual and asexual reproduction
Cause several significant human diseases

Question 9

Trypanosoma lewisi

Answer 9

Part of the supergroup Excavata
Parasite found in rat blood
Flagella for motility
Heterotrophic; obtain nutrients from host

Question 10

SAR traits

Answer 10

Includes autotrophs, heterotrophs, and parasites
Unicellular & multicellular forms
Move via flagella, cilia & pseudopodia
Food sources, Red Tides, infectious disease

Question 11

Paramecium caudatum

Answer 11

part of SAR group
Predatory heterotrophs
Unicellular
Cilia for motility
Alveoli to support cell membrane
other members of group cause Red Tides & malaria

Question 12

Diatoms

Answer 12

part of SAR group
mainly photosynthetic (autotrophs)
Unicellular
toothpaste, carbon sinks, primary producers

Question 13

Brown algae (give example too!)

Answer 13

part of SAR group
Ex: Fucus
Autotrophic
Multicellular
Sexual reproduction (reproduce by spores and gametes)
Traits analogous to those in plants
Food source & food production (Think: pudding)

Question 14

Amoeba Proteus

Answer 14

part of Unikonta group
Pseudopodia for motility
Unicellular

Question 15

What are found in supergroup Archaeplastida?

Answer 15

Red algae, green algae, land plants

Question 16

Red algae (and give an example)

Answer 16

in Archaeplastida Super group
Mostly multicellular
Sexual reproduction
Contain special pigment that masks chlorophyll
Ex: Porphyra (multi)

Question 17

Green algae (and give two examples)

Answer 17

Can be single-celled, filamentous, colonial, and multicellular
Algae most closely related to land plants
Ex: Ulva (multi)
Ex: Spirogyra (filamentous)