Lesson Worksheet: Natural Selection Science
In this worksheet, we will practice describing the process of natural selection in organisms and explaining how natural selection benefits organisms and leads to their evolution.
Q1:
State whether the following sentences are true or false.
The theory of natural selection relies on organisms within a population naturally showing some variation in their characteristics.
- ATrue
- BFalse
Organisms that have less useful characteristics for their environment are more likely to survive.
- ATrue
- BFalse
Natural selection is the immediate change in an individual organism’s characteristics.
- ATrue
- BFalse
Q2:
The flowchart shows how peppered moths evolved as a result of the industrial revolution in the UK. What characteristic was being selected for here?
- ABlack trees
- BWhite bodies and wings
- CLarge wings
- DLarge amounts of soot
- EBlack bodies and wings
Q3:
Which of the following statements about the evolution of life on Earth is correct?
- AUnicellular organisms existed first and gradually evolved into multicellular organisms.
- BMulticellular organisms have always existed, and some of these evolved into unicellular organisms.
Q4:
The flowchart shows how peppered moths evolved as a result of the industrial revolution in the UK.
Which word would replace the gap in statement 4?
- ACamouflaged
- BMutated
- CEaten
- DVulnerable
Which words would replace the gaps in statement 5?
- ASurvived, died out
- BDied out, evolved
- CDied out, reproduced
- DEvolved, migrated
Q5:
Organisms in a population will show differences in their characteristics. What is the source of these differences in the human body?
- AMuscles
- BGenes
- CRed blood cells
- DSugars
- EBones
Q6:
The diagram shows the stages of natural selection. Starting with W, put the letters in the correct order.
- AW Y Z X
- BW Z X Y
- CW X Y Z
- DW X Z Y
Q7:
Complete the sentence: The process by which organisms change to become better adapted to their environment is called .
- Avegetative propagation
- Bartificial selection
- Cintelligent design
- Dnatural selection
Q8:
What does survival of the fittest mean?
- AIndividuals that have the longest lifespan are able to pass their characteristics on to their offspring.
- BIndividuals with characteristics that make them the fastest and the most powerful will survive and pass on these characteristics to their offspring.
- CIndividuals with characteristics most suited to their environment will survive and pass on these characteristics to their offspring.
Q9:
The flowchart shows the process of natural selection that would have allowed giraffes to evolve long necks. Which of the following statements about this process is correct?
- AThe giraffes with short necks were “fitter” than those with long necks.
- BAs the giraffes with short necks died out, the variation in the population increased.
- CThe giraffes with short necks had to breed with the giraffes with long necks to survive.
- DThe giraffes with long necks had an advantage over the giraffes with short necks.
Q10:
Which scientist is widely credited with proposing the theory of evolution by natural selection?
- AJean-Baptiste Lamarck
- BGregor Mendel
- CAlbert Einstein
- DRosalind Franklin
- ECharles Darwin
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