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