Quiz Ch. VI

Results Reporter
Out of 15 questions, you answered 15 correctly, for a final grade of 100%.
15 correct (100%)

0 incorrect (0%)

0 unanswered (0%)

Your Results:
The correct answer for each question is indicated by a .



1
CORRECT

Which of these features is not used to characterize major groups of seaweeds?



A)
photosynthetic pigments



B)
food reserves



C)
cell wall components



D)
type of roots






2
CORRECT

Going from the surface to the point of attachment to a rock, which is the correct order in which the parts of a giant kelp occur?



A)
holdfast, stipe, pneumatocyst, blade



B)
stipe, holdfast, blade, pneumatocyst



C)
blade, pneumatocyst, stipe, holdfast



D)
pneumatocyst, stipe, blade, holdfast






3
CORRECT

Green algae generally can be found in all of these habitats except



A)
fresh water.



B)
polluted areas.



C)
estuaries.



D)
rocks exposed to heavy wave action.






4
CORRECT

Which thallus shape is not found among kelp?



A)
thin filaments formed by a single cell



B)
a long stipe with one pneumatocyst



C)
several stipes and a massive holdfast



D)
a single large blade






5
CORRECT

Brown algae are dominant primary producers in which area?



A)
tropical coasts



B)
coral reefs



C)
mud flats



D)
temperate rocky coasts






6
CORRECT

Among red algae, dense clumps are characteristic of species living where?



A)
in deep water



B)
in areas rarely exposed to air



C)
on upper levels of rocky coasts



D)
as parasites on other algae






7
CORRECT

In many seaweeds, the thallus seen most often is a



A)
sporophyte



B)
gametophyte



C)
zoospore



D)
carposporophyte






8
CORRECT

In seaweeds, the result of meiosis



A)
always is identical gametes.



B)
always is sperm and eggs.



C)
may be a spore that produces a gametophyte.



D)
is a zygote.






9
CORRECT

Algin is used by people in which way?



A)
to wrap Japanese food



B)
as a medium to grow bacteria



C)
as a stabilizer and emulsifier in the dairy industry



D)
directly as food






10
CORRECT

In flowering plants,



A)
the sperm consists of motile zoospores.



B)
a well-developed free-living gametophyte forms.



C)
marine and nearshore species do not have roots.



D)
leaves are present.






11
CORRECT

Rhizomes of seagrasses



A)
carry on photosynthesis.



B)
stick upright out of soft, muddy sediments.



C)
cannot transport water or nutrients.



D)
generally grow beneath the sediment.






12
CORRECT

The northern limit of mangroves is set by which feature of the environment?



A)
salinity of the water



B)
frost



C)
light levels



D)
oxygen levels in the sediment






13
CORRECT

In a salt marsh,



A)
cordgrasses grow well below the water level.



B)
pickle weed and other halophytes live at higher levels.



C)
mangroves are the dominant plants.



D)
seeds germinate while on the parent.






14
CORRECT

A brown seaweed found floating offshore in the Gulf of Mexico likely is



A)
giant kelp.



B)
Irish moss.



C)
dead man's fingers.



D)
Sargasso weed.






15
CORRECT

Like calcareous green algae, coralline red algae



A)
can be involved in the development of coral reefs.



B)
live only in the tropics.



C)
always have thalli with segments.



D)
turn pink when dead.