Date: _______________
Name: _____________________
TRUE AND FALSE PRACTICE – EVOLUTION UNIT
Origins of Evolutionary Science
Modified True/False: Indicate whether the sentence or statement is true or false. If false, change the identified word
or phrase to make the sentence or statement true.
____
1. Evolution is defined as the change in the characteristics that are most common in the population.
_________________________
____
2. A single species may change through time to become another species. _________________________
____
3. The basic structure of the hemoglobin molecule is the same in humans, penguins, and salmon. This is
considered to be an example of homology. _________________________
____
4. The wing of a bat, the arm of a man, and the flipper of a whale all have a similar number of bones and a
similar structure. This is considered to be an example of parallel adaptation.
_________________________
____
5. Sharks, snakes, and crocodiles are able to grow new teeth all of their lives. This is considered to be an
example of analogous structures. ____________________
____
6. The South American spider monkey and the lemur of Madagascar both have a prehensile tail. This is
considered to be an example of parallel adaptation. _________________________
____
7. The iguanas on the Galapagos Islands eat algae, while those on the mainland of Central America eat tree
leaves. This is considered to be an example of adaptation caused by geographical distribution.
_________________________
____
8. Hummingbirds and monarch butterflies both have wings. This is considered to be an example of
analogous structures. _________________________
____
9. Cytochrome C is an enzyme that consists of 104 to 112 amino acids. The amino acids in positions 70 to
80 are the same in every known organism. This is considered to be an example of parallel adaptation.
_________________________
____ 10. In the early stages of pregnancy, the human embryo has a tail. This is considered to be an example of
vestigial structures. _________________________
____ 11. There are a great variety of breeds of dogs. This is considered to be an example of natural selection.
______________________________
____ 12. Adaptations are any characteristics that allow an organism to reproduce more successfully.
_________________________
Mechanisms of Evolution
____
1. Polyploid and diploid individuals generally cannot mate. If they do mate they cannot produce offspring.
_________________________
____
2. Most animals have probably arisen as a result of four populations becoming separated and evolving
genetic differences through time. _________________________
____
3. The geographic speciation model requires that groups of individuals in separate populations develop
behavioural traits that allow them to interbreed. ___________________________________
____
4. Islands are very important places in which speciation occurs because the populations they contain are
spatially isolated from other populations. _________________________
____
5. Over time, the total number of species in existence does not change. ____________________
____
6. A species is a group of individuals that are reproductively compatible with each other but not with
individuals from other groups. _________________________
____
7. Speciation can sometimes occur "instantaneously" by major changes in chromosomes.
____________________
The Evolutionary History of Life
____
6. Primary Abiogenesis is a theory that proposes that life originated from materials that came to Earth from
space. ______________________________
____
7. An RNA molecule that is able to catalyze a chemical reaction is called a liposome.
_________________________
____
8. A liposome is a spherical lipid molecule that forms in water. _________________________
____
9. Panaspermia is a theory that proposes that life originated from materials that came to Earth from space.
______________________________
____ 10. Humans and insects both have joints in the limbs, but these develop differently. These characteristics are
called vestigial structures. _________________________
____ 11. Humans and insects both have joints in the limbs, but these develop differently. This type of evolution is
called divergent evolution. ______________________________
____ 12. Australian marsupials show similar body plans to placental mammals. These are examples of homology.
______________________________
____ 13. Darwin’s finches have a similar body plan, but increasingly different traits. These are examples of
convergent evolution. _________________________
____ 14. Darwin’s finches have a similar body plan, but increasingly different traits. These are examples of
adaptive radiation. _________________________
____ 15. The leg of an insect and the arm of a man both have joints. This is considered to be an example of
parallel adaptation. _________________________
Origins of Evolutionary Science PRACTICE TEST
Answer Section
MODIFIED TRUE/FALSE
1. ANS:
LOC:
2. ANS:
LOC:
3. ANS:
LOC:
4. ANS:
T
EV1.02
T
EV1.01
T
EV2.01
F, homology
REF: K/U
OBJ: 11.1
REF: K/U
OBJ: 11.1
REF: K/U
OBJ: 11.5
REF: K/U
OBJ: 11.5
5. ANS: F, homology
LOC: EV2.01
REF: K/U
OBJ: 11.5
6. ANS: F, homology
LOC: EV2.01
REF:
7. ANS:
LOC:
8. ANS:
LOC:
9. ANS:
K/U
OBJ: 11.5
T
EV2.01
T
EV2.01
F, homology
LOC: EV2.01
REF: K/U
OBJ: 11.5
REF: K/U
OBJ: 11.5
REF:
10. ANS:
LOC:
11. ANS:
K/U
OBJ: 11.5
T
EV2.01
F, artificial selection
LOC: EV2.01
REF: K/U
OBJ: 11.5
LOC: EV2.01
REF: K/U
OBJ: 11.6
1. ANS: T
LOC: EV1.03
2. ANS: F, two populations
REF: K/U
OBJ: 12.1
REF: K/U
OBJ: 12.6
3. ANS: F, do not allow them to interbreed
LOC: EV1.01
REF: K/U
12. ANS: T
LOC: EV1.04
OBJ: 11.5
Mechanisms of Evolution
Answer Section
MODIFIED TRUE/FALSE
REF:
4. ANS:
LOC:
5. ANS:
K/U
T
EV1.03
F, changes
OBJ: 12.6
REF:
6. ANS:
LOC:
7. ANS:
LOC:
K/U
T
EV1.03
T
EV1.01
OBJ: 12.3
LOC: EV1.01
REF: K/U
OBJ: 12.3
LOC: EV1.03
REF: K/U
OBJ: 12.6
REF: K/U
OBJ: 12.3
The Evolutionary History of Life
Answer Section
MODIFIED TRUE/FALSE
6. ANS: F, nonliving matter
REF: K/U
7. ANS: F, ribozyme
OBJ: 13.1
LOC: EV2.01
K/U
OBJ: 13.1
T
EV2.01
T
EV2.01
F, homoplasies
LOC: EV2.01
REF: K/U
OBJ: 13.1
REF: K/U
OBJ: 13.1
REF: K/U
OBJ: 13.3
11. ANS: F, convergent evolution
LOC: EV1.01
REF: K/U
OBJ: 13.3
12. ANS: F, convergent evolution
LOC: EV1.01
REF: K/U
OBJ: 13.3
13. ANS: F, divergent evolution
LOC: EV1.01
REF:
14. ANS:
LOC:
15. ANS:
LOC: EV1.01
REF: K/U
REF:
8. ANS:
LOC:
9. ANS:
LOC:
10. ANS:
K/U
OBJ: 13.3
T
EV1.01
F, homoplasies
REF: K/U
OBJ: 13.3
LOC: EV1.01
OBJ: 13.3