The Classification Exam
Name:
_____1. (2 pts) Which one of these species is correctly typed?
a) trypanasoma bruceii
b) Trypanasoma bruceii
c) trypanasoma bruceii
d) Trypanasoma bruceii
2. (3 pts) Handwrite the species name for humans in the correct
format in the space below:
_____3. (2 pts) This format is an example of:
a) binomial nomenclature
b) genus species
c) international naming
d) Latin polynomials
_____4. (2 pts) Placement in each level of classification is based on
a) dichotomous keys
b) embryology
c) general characteristics
d) shared characteristics
_____5. (2 pts) Similar genera are grouped into a(n):
a) class
b) family
c) order
d) phyllum
______6. (2 pts) In the cladogram above, which two species have most
recently shared a common ancestor?
a) crocodile & mammal
b) lizard & crocodile
c) rayfinned fish & lungfish
d) salamander & frog
______7. (2 pts) Structures inherited from a common ancestor are called:
a) adaptive structures
b) analogous structures
c) ancestral structures
d) homologous structures
_____8. (2 pts) Taxonomy is the:
a) evolutionary history of a species
b) science of naming and classifying organisms
c) study of life and life processes
d) study of fossils and past organisms
_____9. (2 pts) The table above shows the abbreviated amino acids in
hemoglobin for each animal. Which organism’s hemoglobin is
least similar compared to human hemoglobin?
a) chimpanzee
b) gorilla
c) horse
d) kangaroo
_____10. (2 pts) The table above is an example of what type of
relationship evidence:
a) amniotic evidence
b) biochemical evidence
c) fossil evidence
d) structural evidence
11-12. (2 pts each) Using the dichotomous key provided at the back of
the exam, identify these two organisms.
11)___________________
12)____________________
13. (6 pts) Using the chart given, compare and contrast the
characteristics of two different systems of classification.
System of
classification:
Based on:
Used to:
14. (2 pts) The diagram below represent bones in the hind limbs of
extinct horse ancestors and modern horses.
In two sentences, please describe what process has happened, and how
we know.
15-22. (1 pt each) Place the biological hierarchy in order from least
inclusive to most inclusive:
Least inclusive
______15.
______16.
______17.
______18.
______19.
______20.
______21.
______22.
Most inclusive
A) Class
B) Domain
C) Family
D) Genus
E) Kingdom
F) Order
G) Phylum
H) Species
23-26. (1 pt each) Fill out this chart by placing an X under each species
for each characteristic they have.
Character
23.Bullfrog 24. Human
25.Kangaroo 26. Shark
Vertebrae
Two pairs of
limbs
Mammary
glands
Placenta
27. (4 pts) Now draw a cladogram based on the data in your table.
Include both species and characteristics.
28. (2 pts) According to the cladogram above, which 2 species are the
least related?
Classification Exam Key
1. d
2. Homo sapiens
3. a
4. d
5. b
6. d
7. d
8. b
9. d
10. b
11.Giant Sequoia
12. Ash
13. Possible answers checklist (Need two complete sets)
set a) Taxonomy, similar structures, name species
set b) Cladograms, derived characteristics, evolutionary history
set c) Phylogenies, genetics, evolutionary history (show
relationships)
set d) Dichotomous Keys, structures, ID specimens
14. Answer checklist: Must say something about losing toes/digits, must
say something about tracing evolutionary history from fossils to
current species, may mention cladograms or homologous
structures.
15. H
16. D
17. C
18. F
19. A
20. G
21. E
22. B
23. X in Vertebrae, two pairs of limbs
24. X in Vertebrae, two pairs of limbs, mammary glands, and placenta
25. X in Vertebrae, two pairs of limbs, mammary glands
26. X in Vertebrae
27. /Vertebrae, | Shark, /2 pair limbs, | Bullfrog, /Mammary glands, |
Kangaroo, /placenta, | Human.
28. Shark and human