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Evidence for Evolution

Total questions: 20

Worksheet time: 21mins

Name
Class
Date
1.
The most recent ancestral form or species from which two different species evolved is known as ________________________.
a)
a common ancestor.
b)
an embryonic stage.
c)
development.
d)
evolution.
2.
In stage one (top row) of these embryos, most of the embryos________
a)
look very similar.
b)
have very different features.
c)
show different stages of development.
d)
have only a tail if they are non-human.
3.
In the the third embryonic stage (bottom row), mammal embryos _____
a)
have more characteristics in common with each other than with reptiles or birds.
b)
are still hard to tell from reptiles and birds.
c)
have the same features as fish, reptiles, and birds.
d)
do not have tails.
4.

What type of evidence is represented in the picture above:

a)

Fossils

b)

Vestigial Structures

c)

DNA

d)

Homologous Structures

5.

What type of evidence are shown in the picture above?

a)

Fossils

b)

Embryology

c)

Homologous Structures

d)

Vestigial Structures

6.
The similarities of the bones in the diagram provide evidence that---
a)
The organisms shown lived in the same natural envionrment
b)
The organisms shown may have developed from a common ancestor
c)
The organisms shown have the same genetic diseases
d)
All vertebrate species have identical forelimbs
7.
The diagram shows fossils in different rock layers. Which of these statements about the age of these fossils is most likely correct?
a)
Fossil A and C are the same age
b)
Fossil B is older than fossil C
c)
Fossils A is older than fossil B
d)
Fossil D is older than fossil C
8.

Body parts similar in structure and origin

a)

evolution

b)

embryology

c)

homologous

d)

variation

9.

A category of structures that have a similar function, but are structurally different.

a)

Homologous structures

b)

Analogous structures

c)

Vestigial structures

d)

Common core structures

10.

What type of structure does this image illustrate?

a)

Homologous structures

b)

Analogous structures

c)

Vestigial structures

11.

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

a)

Yes

b)

No

12.

The fossil record help scientists

a)

better understand the kinds of organisms that lived in the past

b)

better understand how the environment has changed over time

c)

better understand how organisms have evolved over time

d)

all of the above

13.

Which of the following are homologous structures?

a)

whale flipper and bat wing

b)

legs on a beetle and legs on a cat

14.
Evolution is called a theory because
a)
we are not sure if it is true
b)
there's not enough evidence yet
c)
scientific theories are supported by a large amount of evidence
d)
none of these is true
15.

Hippos have been found to be the closest land animals to cetaceans (whales and dolphins). What piece of evidence is NOT a reason that would provide support for this.

a)

They are the animal with the closest DNA

b)

They have similar organs like their extended stomachs with multiple chambers

c)

They have similar bone structures

d)

These are all reasons why hippos are considered the closest land animals to whales and dolphins.

16.
A fossil of an extinct dinosaur is found and the anatomy of the fossil shows similarities to that of a bird. What could this mean?
a)
This is purely by chance and isn't significant
b)
The extinct dinosaur and modern bird share a common ancestor
c)
All dinosaurs evolved into birds and that's why there aren't any dinosaurs alive today
d)
Dinosaurs choose to fly, and evolved into birds to escape predation and capture food
17.
Relative dating of rock layers tells us that the deeper we dig, 
a)
the younger the rocks get.
b)
the simpler the rocks get.
c)
the harder the rocks get.
d)
the older the rocks get.
18.
When all individuals in a species have died, it is called
a)
evolution
b)
extinction
c)
adaptation
d)
natural selection
19.
Fins that look similar on the outside but contain different structures inside formed
a)
from a common ancestor
b)
independently in similar habitats 
c)
at the same time and place
d)
from a close relative
20.

What is the fossil record?

a)

Are the remains or evidence of once-living organisms

b)

Is the change over time in populations of related organisms

c)

Is made up of all the fossils ever discovered on Earth

d)

Occurs when the last individual organism of a species dies

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