Name ______________________________________ Date _________
Evidence of Evolution
Unit 1 Lesson 3
Lesson WS
Choose the letter of the best answer.
1. The diagram below shows a portion of the fossil
record in sedimentary rock. Different rock layers
and fossils are clearly visible.
4. Juan is studying fossils. His teacher wrote the
following statements on the board and asked the
students to put them in the correct order to
describe how fossils are formed.
1. Minerals seep into the organism’s body and
replace it with stone.
2. The organism completely decomposes,
leaving behind an imprint.
3. An organism dies and its body is covered
with a layer of sediment.
4. Time passes, and sediment layers continue to
build up on the organism.
Which layer of rock is the oldest? (p30)
A. Layer A is the oldest.
B. Layer B is the oldest.
C. Layer D is the oldest.
Which is the correct order of events for fossil
formation? (P31)
D. They are all the same age.
A. 3, 4, 1, 2
B. 2, 3, 4, 1
2. Which of these cases provides embryological
evidence that two species share a common
ancestor? (p33)
C. 1, 3, 2, 4
D. 3, 2, 1, 4
A. two species with very similar DNA
B. two species with different body structures
C. two species with different structures that
have similar functions
5. Which of these descriptions is an example of an
unused body structure? (p34)
D. two different species with similar patterns of
early development
A. a bat’s wing that enables it to fly
3. William discovered that two modern-day species
have very similar DNA. He concludes that the
two species are closely related. What type of
evidence did William most likely use to reach
his conclusion? (p33)
B. the tiny leg bones found in snakes that have
no legs
C. the front legs of a dog that supports its weight
as it walks and runs
D. the tentacles of an octopus that aid it in
movement and catching prey
A. fossil evidence
B. genetic evidence
C. structural evidence
D. evidence from developmental patterns
Lesson Quiz
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Module B • Assessment Guide