Free Printable Natural Selection

Worksheets

Natural Selection

Total questions: 21

Worksheet time: 14mins

Name

Class

Date

What word describes a trait that helps an organism survive in its environment?

natural selection

mutation

camouflage

adaptation

How do you "win" at natural selection?

survive

go extinct

survive & reproduce

Which organisms are most likely to survive?

the best adapted

the fastest

the strongest

the most domesticated (tamed)

The trees these moths used to live on were white, but have been covered in soot from coal factories. Which moth will be more successful in this environment?

Dark moth

Light moth

Both will be equally successful

Neither will be successful

These moths are all the same species. The differences between their wings is an example of ________________

Natural Selection

Variation

Homeostasis

Extinction

When an environment changes faster that an species can adapt, the most likely outcome is...

...biological evolution.

...voluntary mutation

...species extinction

...selective breeding

Which of the following explains adaptation.

An individual organism changes to meet its needs in the environment. These changes pass down to their offspring.

The species as a whole changes their characteristics.

Beneficial traits allow organism to survive and pass on those traits

New characteristics arise in a species as needed. If these traits are helpful, they are passed down.

Evolution works by

individuals changing to suit their environment

Individuals learned new traits and pass them on

sudden change in the environment cause a species change

small changes pass down through many generations

Mutations are important because they bring about

death of the organism in which they develop

genetic variation needed for a population to evolve

benefits for the individual, not for the population

Hardey-Weinberg equilibrium within a population

10.

Natural selection results in change in a population's _____________ traits over time.

inherited

acquired

11.

Individuals undergo evolution.

True

False

12.

Charles Darwin observed that finches of different species on the Galápagos Islands have many similar physical characteristics, this supports the hypothesis that these finches

are twins

acquired traits through use and disuse.

all eat the same type of food.

descended from a common ancestor.

13.

What does 'fitness' mean in natural selection?

How fast an animal can run

How much you work out

How well adapted the animal is to their environment

How strong an animal is

14.

TRUE OR FALSE: All mutations are bad

TRUE

FALSE

15.

TRUE or FALSE: Mutations are random

TRUE

FALSE

16.

TRUE or FALSE: Mutations lead to variation.

TRUE

FALSE

17.

When every organism of a species has died

Evolution

Natural Selection

Extinction

Artificial selection

18.

Animals may fight, make threatening sounds, and act aggressively toward members of the same species. These behaviors usually occur as the result of:

Adaptation

Evolution

Competition

Variation

19.

Bird's beaks evolve mainly due to the type of _______ available

food

water

shrubs

mates

20.

Organisms with differences/variations that are helpful will...

live longer

become extinct

show no change

21.

In a cold environment, what would be some adaptaive traits?

Select all that apply

Thick blubber

Thick fur

Thin fur

Weak muscles

Reset

Natural Selection

Total questions: 21

Worksheet time: 14mins

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