WorksheetsNatural Selection and Evolution
Total questions: 10
Worksheet time: 7mins
Name
Class
Date
1.
What is a common ancestor?
a)
An animal with lots of offspring
b)
An animal from which two or more different species evolved
c)
An animal that is related to many other species
d)
An animal that is good at escaping predators
2.
Which of the following is an example of environmental pressure?
a)
The air pressure in the atmosphere
b)
Genetic variation between two individuals
c)
A changing climate
d)
An argument
3.
In the phrase "survival of the fittest," the term "fittest" refers to:
a)
The best adapted organisms
b)
The biggest organisms
c)
The smartest organisms
d)
The fastest organisms
4.
Which variation would most likely benefit any organism, **regardless** of environment?
a)
The ability to swim deeper
b)
Marking to help it blend in with trees
c)
Bigger claws or teeth
d)
Ability to produce energy more efficiently
5.
When nature "selects" a variation, that means that the trait
a)
Gets passed along from generation to generation
b)
Causes the population to shrink
c)
Has brought about a new species
d)
Helps prey escape predators
6.
Dogs are an example of
a)
a common ancestor
b)
selective breeding
c)
the natural place of evolution
d)
extinction rates rising
7.
On Darwin's tree of life, organisms at the base of a branch
a)
Go extinct from environmental pressures
b)
Evolve into the closest species on the tree's trunk
c)
Give rise to species father down the branch
d)
Are less fit than secies in the middle of a branch
8.
A fire that randomly wipes out part of a population is an example of
a)
Natural selection
b)
Survival of the fittest
c)
Genetic drift
d)
Selective Breeding
9.
When a beneficial mutation (such as walking upright) spreads through an entire population, that population
a)
is benecicial
b)
has evolved
c)
goes extinct
d)
keeps mutating
10.
The "tree of life" that shows different species is full of branches that "drop off". This represents
a)
A species that has gone extinct
b)
A species that is still evolving
c)
A species that is not real
d)
A species that benefited other
100 %
