Chapter 18

Question 1

eukaryote that isn’t plant, fungus, or animal

Answer 1

protist

Question 2

similar to choanocytes (collar cells) on a sponge; like an animal cell–suggests evolutionary connection

Answer 2

choanoflagellates

Question 3

marine protists with 2 flagella; produce toxin that creates red tide

Answer 3

dinoflagellates

Question 4

usually unicellular; photosynthetic but can consume bacteria and diatoms

Answer 4

Euglena

Question 5

unicellular algae with silica cell walls that make many ornate shapes; photosynthetic; used for reflective material, signs

Answer 5

diatoms

Question 6

multicellular, photosynthetic protists; kelp

Answer 6

brown algae

Question 7

photosynthetic, multicellular protists that can live in deep water (it absorbs blue light waves); used to make agar, chocolate, ice cream, etc.

Answer 7

red algae

Question 8

most similar to plants and thought to be their ancestor

Answer 8

green algae

Question 9

multicellular haploid (gametophyte) phase followed by diploid (sporophyte) phase

Answer 9

alternation of generations

Question 10

uses spores to reproduce; when food is scarce will congregate and travel as one unit

Answer 10

slime mold

Question 11

produces extensions for locomotion and phagocytosis

Answer 11

amoeboid protozoa