CHAPTER 25 Protista
Practice Test
Refer to the illustration above. The organism
shown in diagram 3 moves by means of a(n)
____________________.
flagellum
Refer to the illustration above. The organism
shown in diagram 2 moves by means of
____________________.
cilia
Refer to the illustration above. The organism
shown in diagram 1 moves by means of
____________________.
pseudopodia
Disease-causing protists are transmitted mainly by
insects and contaminated ____________________.
water
Some algae have thin, flattened structures that
resemble ____________________ of plants; some have
long, filamentous structures that resemble
____________________ of plants; and some have
anchoring structures that resemble
____________________ of plants.
leaves, stems, roots
The stage in the life cycle of Plasmodium that
develops in mosquitoes and is injected into
humans is called the
a.
sporophyte.
c.
sporozoite.
b.
zoospore.
d.
gametocyte.
c
Although algae are relatively unspecialized, they
may have structures specialized for
a.
anchoring to the ocean bottom.
b.
reproduction.
c.
movement.
d.
All of the above
d
The process in which two paramecia come
together after meiosis to exchange parts of their
genetic material is called
a.
pollination.
c.
conjugation.
b.
mitosis.
d.
replication.
c
Which of the following types of algae are most like
plants?
a.
multicellular algae
b.
colonial algae
c.
unicellular algae
d.
filamentous algae
a
Refer to the illustration above. The
structure that contains multiple
copies of DNA is structure
a.
1.
c.
2.
b.
5.
d.
3.
a
Which of the following is not a characteristic used
to classify algae?
a.
composition of cell wall
b.
form of food storage
c.
type of pigments
d.
habitat
d
Algal blooms are caused by
a.
low nutrient concentrations.
b.
high nutrient concentrations.
c.
low water temperature.
d.
large numbers of fish.
b
A pseudoplasmodium is a(n) ____ of a ____ slime
mold.
a.
offspring; plasmodial
b.
feeding-stage structure; plasmodial
c.
feeding-stage structure; cellular
d.
offspring; cellular
c
Green algae and plants
a.
both have photosynthetic pigments.
b.
both have cell walls.
c.
both use starch to store food.
d.
All of the above
d
The algal phylum most essential to the production
of photosynthetic products and oxygen for Earth’s
heterotrophs is the phylum
a.
Dinoflagellata. c.
Bacillariophyta.
b.
Phaeophyta.
d.
Euglenophyta.
c
Pseudopodia are used for
a.
mitosis.
c.
reproduction.
b.
movement.
d.
conjugation.
b
You have been given an unknown organism to
identify. You find that it is unicellular and has
mitochondria. Which of the following must it also
have?
a.
chloroplasts
c.
pseudopodia
b.
a nucleus d.
one or more flagella
b
All protists
a.
use flagella to move. c.
are parasites.
b.
move toward light.
d.
have a true
nucleus.
d
Giardiasis is a disease that is spread
a.
by direct person-to-person contact.
b.
through the air.
c.
by the Anopheles mosquito.
d.
through water.
d
Which of the following is not an environmental role
of protists?
a.
Photosynthetic protists are at the base of
many food webs.
b.
Protists form large amounts of cellulose.
c.
Protists produce large amounts of
atmospheric oxygen.
d.
Protists form important symbiotic
relationships with other organisms.
b
Which of the following is not characteristic of the
phylum Chlorophyta?
a.
presence of chlorophylls a and b
b.
food stored as starch
c.
only unicellular forms
d.
cell walls made of cellulose
c
dinoflagellates : flagella ::
a.
ciliates : pseudopodia
b.
apicomplexans : flagella
c.
amoebas : pseudopodia
d.
amoebas : flagella
c
The feeding stage of a plasmodial slime mold can
be described as
a.
unicellular.
c.
multinucleate.
b.
haploid.
d.
multicellular.
c
Algae are
a.
always unicellular.
b.
autotrophic protists.
c.
usually found deep in the oceans.
d.
All of the above
b
green algae : chlorophylls a and b ::
a.
brown algae : phycobilins
b.
red algae : phycobilins
c.
red algae : pigments similar to those in
diatoms
d.
brown algae : euglenoids
b
giardiasis : contaminated water ::
a.
malaria : mosquito
b.
trichomoniasis : mosquito
c.
malaria : food contamination
d.
amebiasis : giardiasis
a
The
a.
b.
c.
d.
protist that causes malaria reproduces in the
red blood cells of a mosquito.
stinger of a mosquito.
red blood cells of a human.
intestines of a human.
c
Euglena is an example of a protist that
a.
b.
c.
d.
is only a parasitic heterotroph.
is always autotrophic.
swims away from light.
is both autotrophic and heterotrophic.
d
The End