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Biology 2 Quiz 20-4
Test Description: 20-4
Instructions: Answer all questions to get your test result.
1) The brown accessory pigment found in brown algae is phycobilln.
A
False
B
True
2) Members of the phylum Rhodophyta contain the accessory pigment phycobilln.
A
False
B
True
3) The life cycles of many algae include both a diploid and haploid generation.
A
True
B
False
4) Which of the following is algae's most important contribution to humans?
A
as a direct food source for humans
B
as a source for medicinal drugs
C
as a source for industrial chemicals
D
as a photosynthesizer
5) Why are algae considered one of the most important groups of organisms on our planet?
A
They produce chemicals that are used to make plastics, waxes, and paints
B
They are rich in vitamin C
C
They produce much of the earths oxygen through photosynthesis
D
They produce chemicals that are used to treat health problems
6) An example of a multicellular green algae is
A
ulva
B
Chlamydomonas
C
volvox
D
fucus
7) An argument that does NOT support the classification of multicellular green algae as plants is that multicellular green algae
A
display alternation of generations
B
have specialized tissues
C
live primarily in water
D
contain chlorophyll a. which makes them green
8) Many algae switch back and forth between diploid and haploid stages during their life cycle in a process known as
A
sexual reproduction
B
alternation of generations
C
fusion of opposite mating types
D
asexual reproduction
9) Some products derived from algae include
A
chemicals in plastics, waxes, paints, and lubricants
B
drugs for stomach ulcers and high blood pressure
C
all of these
D
thickeners for food
10) Red algae lack flagella and
A
centrioles
B
accessory pigments
C
nuclei
D
chlorphyl
11) In the life cycle of the green algae Ulva, one of the phases produces male and female gametes known as
A
gametophytes
B
sporophytes
C
zoospores
D
spores
12) What characteristics of green plants is shared by green algae?
A
photosynthetic pigments
B
all of the above
C
cell wall composition
D
multicellularity
13) The phylum of multicellular algae most likely to be observed at great depths is
A
Phaeophyta
B
Chlorophyta
C
none of the above
D
Rhodophyta
*select an answer for all questions
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