Marine Biology (Castro), 8th Edition

Chapter 6: Multicellular Primary Producers: Seaweeds and Plants

Chapter Quiz

1
Brown algae are dominant primary producers in which area?
A)Tropical coasts
B)Coral reefs
C)Mud flats
D)Temperate rocky coasts
2
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
3
The holdfasts of seaweeds are analogous to roots because both provide an anchor and absorb nutrients to supply the entire algal body or thallus.
A)True
B)False
4
In some seaweeds, leaf-like portions called blades are kept near the sea surface with gas-filled bladders called pneumatocysts.
A)True
B)False
5
The Chlorophyta includes the largest algae, the giant kelps.
A)True
B)False
6
A giant kelp typically grows very slowly because much of its huge thallus is in deep dark waters.
A)True
B)False
7
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.
8
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
9
Coralline algae are entirely responsible for making coral reefs
A)True
B)False
10
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.
11
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.
12
The most common pattern of reproduction in seaweeds is like that of animals, with a diploid adult thallus and haploid gametes.
A)True
B)False
13
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
14
Seagrasses are considered to belong to the Kingdom Plantae because they
A)Carry on photosynthesis.
B)Can attach to sand.
C)Have chlorophyll.
D)Have specialized tissues that transport nutrients and food.
15
Sea grasses grow in clusters interconnected with horizontal root-like stems.
A)True
B)False
16
Cordgrasses of salt marshes
A)Belong to the same family as sea grasses.
B)Tolerate total submergence in seawater.
C)Can excrete excess salt.
D)Cannot tolerate frost.
17
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
18
In some mangrove plants, seeds germinate before detaching from the parent tree.
A)True
B)False
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