Download Unit IIIA Practice Exam Unit_IIIA_Practice_Exam_2012_2

AP Biology Exam #7 (PRACTICE)
Subunit #7: Diversity of Life
Multiple Choice Questions: Choose the best answer then bubble your answer on your scantron sheet.
1. Armadillos and spiny anteaters are not related. Yet both have long snouts, long and sticky
tongues, and long sharp claws to dig ants out of their nests. The best possible explanation for
these similarities is
(A) adaptive radiation
(B) convergent evolution
(C) repetitive evolution
(D) coevolution
(E) homologous evolution
2. Dogs and wolves in captivity readily produce hybrid pups. Which barrier to speciation have
humans most likely broken down
(A) geographic isolation
(B) mechanical isolation
(C) infertility
(D) hybrid inviability
(E) hybrid vigor
3. The chart below shows the ingroup and outgroup analysis considering four traits and four
organisms.
Ingroup/Outgroup Table
Organism
I
II
III
IV
Trait I
0
0
0
1
Trait II
0
1
1
1
Trait III
0
0
1
1
Trait IV
0
0
0
1
Which of the following cladograms best represents the relationships between the four
organisms? (NOTE: FIGURE WAS MISTAKENLY LEFT OUT OF PRACTICE EXAM)
ANSWER IS “A”
Questions 4-5: Several new organisms have been discovered. Match the description of the
organisms with the kingdom. Each choice may be used more than once or not at all.
(A) Animalia
(B) Fungi
(C) Monera
(D) Plantae
(E) Protista
4. The organism is multicellular and heterotrophic, has cell walls and reproduces by means of
spores. B
5. This organism is unicellular, green in color, and has no cytoskeleton. It has one circular
chromosome, not enclosed in a nuclear membrane. E
1. Using the dichotomous key below, to which of the following does this bird foot belong
(marked by the arrow)?
(NOTE: FIGURE WAS MISTAKENLY LEFT OUT OF PRACTICE EXAM)
ANSWER IS “A”
1.
2.
3.
4.
a.
b.
a.
b.
a.
b.
a.
b.
foot webbed
foot not webbed
all toes in front
3 toes in front, one in back
strong hook-like claws
delicate leg, grasping feet
slender leg, pointed claws
thick curved claws, adapted for scratching
Bird (A)
2
3
4
Bird (B)
Bird (C)
Bird (D)
Bird (E)
7. Using the dichotomous key provided, identify the illustrated tree species.
(NOTE: FIGURE WAS MISTAKENLY LEFT OUT OF PRACTICE EXAM)
ANSWER IS “E”
1.
a.
b.
2.
a.
b.
a.
3.
b.
4.
a.
b.
needles occurring singly
needles occurring in bunches along
the branches
needles blunt, flat
needles sharp
needles in whorls of 3 or
in opposing pairs
needles not in whorls of 3 or
in opposing pairs
needles in clusters of 5
needles in clusters of 3
2
4
Tree species (A)
3
Tree species (B)
Tree species (C)
Tree species (D)
Tree species (E)
Questions 8-10: Use each of the following descriptions to identify the labeled structure in the
diagram as shown. Each structure may be used more than once or not at all.
8. The capsid. Know this viral structure
9. Recognition glycoproteins derived from both the host cell and the
parent virus. Know this viral structure
10. The viral genome. Know this viral structure
11. Which of the following reactions occurring inside an infected
host cell requires the action of reverse transcriptase?
(A) DNA  DNA
(B) RNA  RNA
(C) DNA  RNA
(D) RNA  DNA
(E) DNA  RNA  protein
12.
(A)
(B)
(C)
(D)
(E)
Which of the following may be the result of a lytic-cycle of virus infection?
New viruses are assembled.
Viral DNA is integrated into the host genome.
Daughter cells will contain segments of the viral DNA.
Host cells may become cancerous.
New host cells with altered phenotypes are produced.
13. Which of the following determine the branch points on a cladogram like the one pictured on
page #1 of this exam?
(A) derived traits unique to the lineage that arises at that point
(B) the relative time since evolution from a common ancestor
(C) observable traits whether they are analogous or homologous
(D) all of the above
(E) none of the above
14. In the biological species concept of Ernst Mayer, what aspect of a population is critical to
determining a species?
(A) physical appearance
(B) similar behavior patterns
(C) interbreeding capabilities
(D) polyploidy
(E) similar genotypes
15.
(A)
(B)
(C)
(D)
(E)
Complete reproductive isolation can lead ultimately to
extinction
speciation
polyploidy
hybridization
gene flow
16.
(A)
(B)
(C)
(D)
(E)
Which of the following will NOT promote speciation?
gamete differences
gene flow
season of fertility
natural selection
genetic drift
17.
(A)
(B)
(C)
(D)
(E)
Speciation occurs
after populations become reproductively isolated and diverge genetically.
when mutations generate observable differences.
when transitional forms develop between different populations.
when natural selection pressures reach their maximum.
when humans intervene and establish new breeds.
18. Linnaeus may have used all but which of the following to assign names and categories to
organisms?
(A) anatomy
(B) behavior
(C) DNA-DNA hybridization
(D) physiology
(E) ecology
19.
(A)
(B)
(C)
(D)
(E)
Which of the following groups represents the most closely related organisms?
kingdoms
species
orders
genera
taxa
20.
(A)
(B)
(C)
(D)
(E)
Which of the following includes all the others?
family
phylum
species
class
order
21.
(A)
(B)
(C)
(D)
(E)
Technically speaking, a cladogram conveys
portrayals of relative evolutionary relationships.
lines of descendants.
a tree of ancestors.
all of the above
none of the above.
22.
(A)
(B)
(C)
(D)
(E)
Bacteria can obtain their nutrition by
photosynthesis.
chemosynthesis.
heterotrophy.
both a and b.
both a, b, and c.
23.
(A)
(B)
(C)
(D)
(E)
Which of the following statements is NOT characteristic of bacteria?
Some may be completely naked.
Some may have hairlike structures called pili.
Some may have rigid cell walls.
Some may have flagella and move about.
Some may have a polysaccharide covering.
24.
(A)
(B)
(C)
(D)
(E)
In what way does prokaryotic fission resemble eukaryotic mitosis?
movement of chromosomes
genetically identical daughter cells
intracellular mechanisms
b and c only
a, b, and c
25.
(A)
(B)
(C)
(D)
(E)
Which of the following does NOT belong to the protist kingdom?
bacteria
protozoans
chrysophytes
dinoflagellates
euglenoids
26.
(A)
(B)
(C)
(D)
(E)
The simplest of the eukaryotes are the
protistans.
plants.
fungi.
animals.
both a and c
27. The value of fungi in the scheme of nature is described by which of the following
statements?
(A) Fungi “fix” nitrogen from the air for use by plants.
(B) Fungi trap sunlight energy in carbohydrates.
(C) Fungi release elements from organic matter through decomposition.
(D) Fungi suppress population explosions by parasitizing over-productive animals.
(E) Fungi can do any of the above, depending on the species and environment.
28.
(A)
(B)
(C)
(D)
(E)
All fungi are
unicellular.
multicellular.
autotrophic.
heterotrophic.
none of the above.
29.
(A)
(B)
(C)
(D)
(E)
In what way do fungi reproduce?
asexually, through spores (actually asexual via budding (i.e. yeast))
budding of the parent body
sexually, through gametes (actually sexually via spores)
both a and b
a, b, and c
30. A lichen is a composite organism made up of
(A) two different fungi
(B) a fungus and an alga
(C) a fungus and a gymnosperm
(D) a fungus and a bryophyte
(E) none of the above