Multiple Choice Questions on Variation

What is meant by variation in biology?

• Differences between different species

• Differences between individuals of the same species

• The ability to survive in different environments

• The change in an organism over time

Which of the following is an example of continuous variation?

• Blood group

• Eye color

• Height

• Ability to roll the tongue

Discontinuous variation results in:

• A range of phenotypes between two extremes

• Only two possible phenotypes

• A limited number of phenotypes with no intermediates

• Gradual changes over time

Which of the following characteristics show discontinuous variation?

• Hand span

• Body length

• Blood group

• Shoe size

What type of variation is influenced by both genetic and environmental factors?

• Discontinuous variation

• Continuous variation

• Inherited variation

• None of the above

Which of these graphs would best represent continuous variation?

• A) A bar chart

• B) A pie chart

• C) A histogram

• D) A line graph

What is an example of an inherited characteristic that shows continuous variation?

• Blood group

• Ability to roll the tongue

• Height

• Eye color

Why is discontinuous variation usually caused only by genetic factors?

• Because it is influenced by multiple genes

• Because it is determined by a single gene or a small number of genes

• Because it changes throughout an organism’s life

• Because it is always influenced by the environment

Which of the following is NOT an example of continuous variation?

• Length of foot

• Weight

• Blood group

• Head circumference

How is discontinuous variation usually represented in data?

• Using a scatter plot

• Using a histogram

• Using a bar chart

• Using a line graph