Cambridge IGCSE · Biology (0610)

Variation: Practice Questions

5 multiple-choice questions marked as you go, and 5 written questions with worked solutions. All on Variation.

10 questions24 marksFree, no account

Question 1

1 mark

Which factor is the primary cause of discontinuous variation?

Question 2

1 mark

Which sequence of events correctly describes the development of antibiotic resistance in a population of bacteria?

Question 3

1 mark

A student collects data on the leaf lengths of 500 oak trees. When the data is plotted on a frequency diagram, it forms a bell-shaped curve.
Which statement about this variation is correct?

Question 4

1 mark

Which type of variation results in a range of phenotypes between two extremes, such as human height?

Question 5

1 mark

Which of the following are significant sources of genetic variation in a population?

Question 6

2 marks

State the definition of a mutation.

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Question 7

3 marks

Identify two external factors that can increase the rate of mutation in living cells.

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Question 8

5 marks

State three sources of genetic variation in populations, excluding mutation.

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Question 9

4 marks

Variation is a fundamental concept in biology that explains the differences seen within a population.
(a) Define the term variation.
(b) Distinguish between continuous variation and discontinuous variation, providing one example of each type.

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Question 10

5 marks

Genetic variation is necessary for populations to adapt to changing environments.
(a) Define the term gene mutation.
(b) List three different sources of genetic variation in a population, other than mutation.
(c) State one factor that can increase the rate of mutation in an organism. <\/p>

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