Ch 28 - Protists

Question 1

Protist

Answer 1

The informal name of the group of mostly unicellular organisms

Question 2

Protists exhibit more

Answer 2

Structural and functional diversity than any other group of eukaryotes

Question 3

Protists include

Answer 3

1. Photoautotrophs which have chloroplasts
2. Heterotrophs
3. Mixotrophs

Question 4

Heterotrophs

Answer 4

Which absorb organic molecules or ingest larger food particles

Question 5

Mixotrophs

Answer 5

Combine photosynthesis and heterotropjhic nutrition

Question 6

Endosymbiosis

Answer 6

A relationship between two species in which one organism lives inside the cell or cells of the other organism (the host)

Question 7

Mitochondria evolved once by

Answer 7

endosymbiosis of an alpha proteobacterium

Question 8

Plastids evolved later by

Answer 8

endosymbiosis of a photosynthetic cyanobacterium

Question 9

The plastid-bearing lineage of protists evolved into

Answer 9

photosynthetic protists, red and green algae

Question 10

Diatoms

Answer 10

unicellular algae with a unique two-part glass like wall of silicon dioxide

Question 11

Brown Algae

Answer 11

the largest and most complex algae

Question 12

Kelps

Answer 12

Giant seeweeds that live in deep structures: the rootlike holdfast, which anchors the alga, and a stemlike stipe, which supports the leaflike blades

Question 13

Apicomplexans

Answer 13

parasites of animals, and some cause serious human diseases

Question 14

Archaeplastida

Answer 14

the supergroup that includes red algae, green algae, and land plants

Question 15

2 main groups of green algae

Answer 15

charophytes and the chlorophytes

Question 16

Charophytes are most closely related to

Answer 16

land plants

Question 17

Unikonta

Answer 17

includes animals, fungi, and some protists

Question 18

Protists play 2 key roles in their habitats

Answer 18

symbiont and producer

Question 19

Producers

Answer 19

obtain energy from the sun