A protist is any organism that is not a
plant, an animal, a fungus, or a(an)
1.
2.
3.
4.
1
eukaryote.
prokaryote.
eubacterium.
archaebacterium.
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Multicellular protists are grouped with
unicellular protists because multicellular
protists
1. do not resemble
plants.
2. do not resemble
animals.
3. do not resemble
fungi.
4. are very similar to
unicellular protists.
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According to Lynn Margulis, eukaryotic
cells may have evolved from
1. a symbiosis of
several cells.
2. mitochondria that
grew very large.
3. chloroplasts that
grew very large.
4. plants, animals, and
fungi.
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Classifying a certain protist, such as
Spirogyra, as a plantlike protist is
problematic because
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1. it is not clear how Spirogyra
obtains nutrition.
2. Spirogyra forms long, threadlike
colonies.
3. Spirogyra belongs in more than
one group.
4. the category does not reflect
Spirogyra’s evolutionary history.
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In an amoeba, a small cavity within the
cytoplasm that stores food is called a
1.
2.
3.
4.
1
gullet.
pseudopod.
food vacuole.
contractile
vacuole.
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To which phylum do amoebas,
foraminiferans, and heliozoans belong?
1.
2.
3.
4.
1
sarcodines
ciliates
sporozoans
pseudopods
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Zooflagellates may live in lakes
and streams, where they
1.
penetrate and live within
cells of a host.
absorb food through
their cell membrane.
feed by sweeping food
particles into their gullet.
feed by surrounding
their meal and taking it
inside themselves.
2.
3.
4.
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Which structure of a paramecium is
analogous to a “reserve copy” of all the cell’s
genes?
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1. the micronucleus
2. the gullet
3. the trichocysts
4. the macronucleus
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The sporozoan Plasmodium
causes the disease known as
1. African sleeping
sickness.
2. amebic dysentery.
3. malaria.
4. algal bloom.
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Which statement about malaria
is true?
1.
Not all strains can be treated, and
there is no completely effective
vaccine.
Many strains can be treated with
modern drugs; however, there is no
completely effective vaccine.
All strains can be treated with
modern drugs, and there is an
effective vaccine.
Malaria has been eradicated by
control of the Anopheles mosquito.
2.
3.
4.
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Which of the following diseases does the
animallike protist known as Entamoeba
cause?
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1. malaria
2. African sleeping
sickness
3. amebic dysentery
4. potato blight
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2
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4
A person who comes down with malaria can
infer that he or she contracted it from
1.
contaminated water
supplies.
infection by the
animallike protist
Giardia.
the bite of the
Anopheles mosquito.
the bite of the tsetse fly.
2.
3.
4.
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Which substances allow algae to harvest
and use the energy from sunlight?
1. cilium and
fucoxanthin
2. chlorophyll and
accessory pigments
3. phycobilin and
flagellum
4. oogonium and
antheridium
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As sunlight passes through sea
water, the sea water
1.
absorbs large amounts
of red and violet
wavelengths.
reflects large amounts
of red and violet
wavelengths.
absorbs large amounts
of blue wavelengths.
none of the above
2.
3.
4.
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What effect did the evolution of different
forms of chlorophyll in algae have?
1.
a decrease in the range of depths at
which algae can live
an increase in the range of depths at
which algae can live
no effect on the range of depths at
which algae can live
a reduction in the photosynthetic
capacity of algae
2.
3.
4.
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To which phylum of unicellular plantlike
algae do the diatoms belong?
1.
2.
3.
4.
1
Euglenophyta
Bacillariophyta
Chrysophyta
Pyrrophyta
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Euglenas have an intricate, folded
cell membrane called a(an)
1.
2.
3.
4.
1
cell wall.
trichocyst.
eyespot.
pellicle.
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Which of the statements is true
about dinoflagellates?
1.
They contain bright yellow
pigments.
They can be both photosynthetic
and heterotrophic.
Many species are luminescent.
They possess pillbox-shaped cell
walls of silica.
2.
3.
4.
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What do the members of the phylum
Pyrrophyta have in common with many of
the members of the phylum Chrysophyta?
1. They have cell walls
of cellulose.
2. They have cell walls
of silica.
3. They have pellicles.
4. They can be both
photosynthetic and
heterotrophic.
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A bloom is
1. the clouding of water
by sewage.
2. an enormous mass
of algae.
3. a symbiotic
relationship between
algae and coral.
4. none of the above
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The population of small, photosynthetic
organisms found near the surface of the
ocean is called
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1. chrysophytes.
2. pyrophytes.
3. phytoplankton.
4. diatoms.
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Which organism would most likely be
present in a water sample collected during a
red tide?
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1. Tridacna
2. Euglenophyta
3. Gonyaulax
4. diatoms
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2
3
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5
1
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4
Which phylum causes the red tide
that infects shellfish with a toxin?
1.
2.
3.
4.
1
Chrysophyta
Euglenophyta
Bacillariophyta
Pyrrophyta
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An example of a multicellular
green alga is
1.
2.
3.
4.
1
Ulva.
Chlamydomonas.
Volvox.
Fucus.
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What characteristic of plants is
shared by green algae?
1. cell wall
composition
2. photosynthetic
pigments
3. multicellularity
4. all of the above
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Red algae lack flagella and
1. nuclei.
2. centrioles.
3. accessory
pigments.
4. chlorophyll.
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The phylum of multicellular algae most
likely to be observed at great depths is
1.
2.
3.
4.
1
Chlorophyta.
Rhodophyta.
Phaeophyta.
none of the above
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Many algae switch back and forth between
diploid and haploid stages during their life
cycle in a process known as
1. alternation of
generations.
2. fusion of opposite
mating types.
3. sexual reproduction.
4. asexual
reproduction.
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The green alga Chlamydomonas
reproduces asexually by producing
1.
2.
3.
4.
1
gametophytes.
sporophytes.
zygotes.
zoospores.
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In the life cycle of the green alga Ulva, one
of the phases produces male and female
gametes known as
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1. sporophytes.
2. gametophytes.
3. spores.
4. zoospores.
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An argument that does NOT support the
classification of multicellular green algae as
plants is that multicellular green algae
1.
have highly specialized
tissues.
live primarily in water.
display alternation of
generations.
contain chlorophyll a,
which makes them
green.
2.
3.
4.
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Why are algae considered one of the most
important groups of organisms on our
planet?
1.
2.
They are rich in vitamin C.
They produce chemicals that are
used to treat health problems.
They produce much of Earth’s
oxygen through photosynthesis.
They produce chemicals that are
used to make plastics, waxes, and
paints.
3.
4.
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Some products derived from
algae include
1. drugs for stomach ulcers and
high blood pressure.
2. thickeners for food.
3. chemicals in plastics, waxes,
paints, and lubricants.
4. all of the above
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Which of the following is algae’s most
important contribution to humans?
1. as a source for
industrial chemicals
2. as a source for
medicinal drugs
3. as a
photosynthesizer
4. as a direct food
source for humans
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Which of the following groups
includes only funguslike protists?
1.
cellular slime molds, brown algae,
water molds
cellular slime molds, acellular slime
molds, water molds
cellular slime molds, acellular slime
molds, animallike protists
cellular slime molds, fungi, water
molds
2.
3.
4.
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Funguslike protists get nutrients
by
1. photosynthesis.
2. living as an
animal parasite.
3. absorbing them
from dead or
decaying matter.
4. none of the above
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Which type of protist is likely to be found in a
damp, nutrient-rich environment?
1. a single-celled
alga
2. an animallike
protist
3. a funguslike
protist
4. all of the above
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The funguslike protists that thrive on dead or
decaying organic matter in water, some of
which are plant parasites on land, are
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1. water molds.
2. acellular slime
molds.
3. cellular slime
molds.
4. true fungi.
1
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3
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5
1
2
3
4
When the amoebalike cells of acellular slime
molds fuse, they form structures with many
nuclei called
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1. plasmodia.
2. zoosporangia.
3. spores.
4. filaments.
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2
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4
In oomycetes, sexual
reproduction takes place in the
1. migrating colony.
2. sporangium.
3. antheridium and
oogonium.
4. zoosporangium.
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3
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What structure of an acellular slime mold is
analogous to the colony of cellular slime
molds?
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1. sporangium
2. germinating spore
3. zygote
4. plasmodium
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2
3
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5
1
2
3
4
Protists that break down organic
material include the
1. funguslike
protists.
2. animallike
protists.
3. plantlike protists.
4. none of the above
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3
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The work of funguslike protists and other
decomposers is important in improving the
quality of
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1. salt water.
2. fresh water.
3. topsoil.
4. potato crops.
1
2
3
4
5
1
2
3
4
What kinds of weather conditions might
cause a farmer to worry about infection by
Phytophthora infestans?
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1. warm and dry
2. cool and dry
3. warm and wet
4. cool and wet
1
2
3
4
5
1
2
3
4
A mildewed grape crop might be
caused by a(an)
1. cellular slime
mold.
2. acellular slime
mold.
3. water mold.
4. none of the above
1
2
3
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4
Protists are a diverse group of mainly
multicellular eukaryotes.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
Ciliates use flagella for feeding and
movement. _________________________
1. True
2. False
1
2
3
4
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1
50%
2
If the people in a town contracted amebic dysentery or
infections by the animallike protist, Giardia, the most likely
cause would be contaminated drinking water.
_________________________
1. True
2. False
1
2
3
4
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5
1
50%
2
The type of chlorophyll most efficient at
capturing red and violet light is chlorophyll a.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
Euglenas have cell walls composed of silica
and shaped like the two sides of a pillbox.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
Blooms of dinoflagellates can cause red
tides. _________________________
1. True
2. False
1
2
3
4
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5
1
50%
2
A high level of certain toxins found in filter feeders,
such as clams, may be a sign that an algal bloom
has occurred. _________________________
1. True
2. False
1
2
3
4
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5
1
50%
2
The brown accessory pigment found in
brown algae is phycobilin.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
Members of the phylum Rhodophyta contain
the accessory pigment phycobilin.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
The life cycles of many algae include both a
diploid and a haploid generation.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
Dried Porphyran, called nori in Japanese, is
a green alga.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
Funguslike protists are autotrophs.
_________________________
1. True
2. False
1
2
3
4
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5
1
50%
2
Slime molds are funguslike protists that play
key roles in recycling organic matter.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
Slime molds and water molds are important
decomposers.
_________________________
1. True
50%
50%
2. False
1
2
3
4
5
1
2
Unlike many others in the same phylum, the spores of the
Myxomycota that caused potato blight in nineteenthcentury Ireland are airborne.
_________________________
1. True
2. False
1
2
3
4
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5
1
50%
2
Participant Scores
0
0
Participant 1
Participant 2
0
0
0
Participant 3
Participant 4
Participant 5
Eukaryotes that are not members of the
kingdoms Plantae, Animalia, or Fungi are
considered ____________________.
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2
3
4
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In one system of classification, an animallike protist species
that obtains nutrition by external digestion, as do
mushrooms and molds, is called a(an)
____________________ protist.
1
2
3
4
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Animallike protists that use structures called
____________________ for movement and for
feeding are members of the phylum Sarcodina.
1
2
3
4
5
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The phylum of animallike protists often referred to as
_________________________ have a name that reflects
the fact that they use flagella for movement.
1
2
3
4
5
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The sporozoan Plasmodium, carried from host to host by
mosquitoes, causes ____________________, a very
serious infectious disease.
1
2
3
4
5
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In the human body, Plasmodium first infects
liver cells, then ____________________
cells, causing them to burst.
1
2
3
4
5
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Chlorophyll and accessory pigments allow
algae to harvest and use the energy of
____________________.
1
2
3
4
5
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Empty protistan shells composed of pectin and containing
an oily residue most likely once belonged to members of
the phylum _________________________.
1
2
3
4
5
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Many members of the phylum Pyrrophyta, which
are also referred to as
_________________________, are luminescent.
1
2
3
4
5
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Red algae contain reddish accessory pigments as
well as _________________________, one type
of chlorophyll.
1
2
3
4
5
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In Ulva, the haploid reproductive cells are called
spores; these are analogous to the
____________________ of Chlamydomonas.
1
2
3
4
5
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Because algae undergo
________________________, they produce
much of Earth’s atmospheric oxygen.
1
2
3
4
5
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Funguslike protists are ____________________
that absorb nutrients from dead or decaying
organic matter.
1
2
3
4
5
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Close examination of a colony of individuals of the phylum
Acrasiomycota would reveal that they retain their
____________________, unlike organisms of the phylum
Myxomycota.
1
2
3
4
5
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The funguslike protists that cause several serious plant
diseases, including mildews and blights of grapes and
tomatoes, are the ____________________.
1
2
3
4
5
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In the six-kingdom system of classification, protists
compose a single kingdom. Describe an alternate
view of this classification.
1
2
3
4
5
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How do sporozoans differ from other
protists in terms of movement?
1
2
3
4
5
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Explain the importance of the animallike
protist Trichonympha to the termites in which
it grows.
1
2
3
4
5
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What is the function of chlorophyll
and accessory pigments in algae?
1
2
3
4
5
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What is the advantage to algae of having
forms of chlorophyll other than chlorophyll
a?
1
2
3
4
5
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How does the phylum name of
dinoflagellates relate to their characteristics?
1
2
3
4
5
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Why are euglenas well adapted to
conditions of varying light intensities?
1
2
3
4
5
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What is phytoplankton?
1
2
3
4
5
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To what features in plants are the holdfast, stipes,
and blades of a brown algae similar? How does a
brown algae remain upright in the water?
1
2
3
4
5
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Compare the structure and function of the
diploid sporophyte to the haploid
gametophyte in the multicellular alga, Ulva.
1
2
3
4
5
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What are two human uses of
algae?
1
2
3
4
5
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How are funguslike protists
similar to fungi?
1
2
3
4
5
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What are slime molds? What
are water molds?
1
2
3
4
5
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What is the primary difference between
cellular slime molds and acellular slime
molds?
1
2
3
4
5
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What type of organism caused the
destruction of much of the potato crops of
1845 and 1846 in Ireland?
1
2
3
4
5
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Identify and briefly explain the process by
which paramecia exchange genetic material
between individuals.
1
2
3
4
5
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Identify the cause and symptoms of African
sleeping sickness, and explain how it is
spread.
1
2
3
4
5
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How do accessory pigments differ in function from
chlorophyll, and how do they affect the appearance of
algae and the depths at which algae can grow?
1
2
3
4
5
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Describe the appearance of a typical
euglena and explain how it moves through
water.
1
2
3
4
5
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Explain the role of unicellular algae in the aquatic food
chain, and predict the effects of the sudden death of a
significant portion of existing populations of unicellular
algae.
1
2
3
4
5
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Compare the structure of the colonial alga
Volvox with that of Ulva, a true multicellular
alga.
1
2
3
4
5
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Describe the structure of the diploid zygote of
Chlamydomonas, and explain under what conditions it
forms and the adaptive advantage of the process of zygote
formation.
1
2
3
4
5
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Why is it difficult to classify cellular slime
molds as unicellular or multicellular?
1
2
3
4
5
0 of 5
Contrast the asexual and sexual
phases in the life cycle of a water mold.
1
2
3
4
5
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What might be the end result in terrestrial and
aquatic ecosystems if all decomposers—including
slime molds and water molds—no longer existed?
1
2
3
4
5
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