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16.4 Evidence for Evolution

Total questions: 10

Worksheet time: 20mins

Name
Class
Date
1.
Structures with the same parts have different functions; suggests that organisms share a common ancestry
a)
vestigial structures
b)
homologous structures
c)
adaptive radiation
d)
fossil
2.
If an organism has a vestigial structure, that structure likely once had a function in a(n)
a)
close relative
b)
early ancestor
c)
unrelated organism
d)
embryological stage
3.
Whales are aquatic mammals that contain a pelvis bone.  Even though it does not aid in its movement, the function must have been used by a common ancestor of the whale.  Thus, the pelvis is referred to as a(n)
a)
vestigial structure
b)
analogous structure
c)
homologous structure
4.

A category of body structures that are formed in similar ways during embryonic development and share similar patterns of bone structure.

a)

Homologous structures

b)

Analogous structures

c)

Vestigial structures

d)

Bone structures

5.

What type of structure does this image illustrate?

a)

Analogous structures

b)

Homologous structures

c)

Vestigial structures

6.

Select the two most important characteristics that distinguish homologous structures.

a)

Similar bone structures

b)

Similar function

c)

Similar embryonic development

d)

Similar species

7.

What type of structure does this image illustrate?

a)

Homologous structures

b)

Analogous structures

c)

Vestigial structures

8.

What are the most important characteristics of analogous structures?

a)

Structures that perform the same function

b)

Structurally different

c)

Structurally the same

d)

Structures that perform different functions

9.

Does the presence of homologous structures in genetically different animals suggest common ancestry?

a)

Yes

b)

No

10.

Which of the following is NOT considered a vestigial structure in humans?

a)

Eye lashes

b)

Appendix

c)

Wisdom teeth

d)

Tail bone