28.5 Unikonts include protists that are closely related to fungi and animals

Question 1

35) The largest seaweeds belong to which group?
A) red algae
B) green algae
C) brown algae
D) golden algae

Answer 1

C) brown algae

Question 2

36) The chloroplasts of land plants are thought to have been derived according to which
evolutionary sequence?
A) cyanobacteria → green algae → land plants
B) cyanobacteria → green algae → fungi → land plants
C) red algae → brown algae → green algae → land plants
D) red algae → cyanobacteria → land plants
E) cyanobacteria → red algae → green algae → land plants

Answer 2

A) cyanobacteria → green algae → land plants

Question 3

37) The chloroplasts of all of the following are derived from ancestral red algae, except those of
A) golden algae.
B) diatoms.
C) dinoflagellates.
D) green algae.
E) brown algae.

Answer 3

D) green algae.

Question 4

38) A biologist discovers an alga that is marine, multicellular, and lives at a depth reached only
by blue light. This alga probably belongs to which group?
A) red algae
B) brown algae
C) green algae
D) dinoflagellates
E) golden algae

Answer 4

A) red algae

Question 5

39) Green algae often differ from land plants in that some green algae
A) are heterotrophs.
B) are unicellular.
C) have plastids.
D) have alternation of generations.
E) have cell walls containing cellulose.

Answer 5

B) are unicellular.

Question 6

40) Which taxon of eukaryotic organisms is thought to be directly ancestral to the plant
kingdom?
A) golden algae
B) radiolarians
C) foraminiferans
D) apicomplexans
E) green algae

Answer 6

E) green algae

Question 7

41) If the Archaeplastidae are eventually designated a kingdom, and if the land plants are
excluded from this kingdom, then what will be true of this new kingdom?
A) It will be monophyletic.
B) It will more accurately depict evolutionary relationships than does the current taxonomy.
C) It will be paraphyletic.
D) It will be a true clade.
E) It will be polyphyletic.

Answer 7

C) It will be paraphyletic.