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4.1 Evolution and natural selection

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Question 4
F

Polar bears live in the Arctic, where the ground is covered with snow and ice for most of the year. Polar bears have white fur.

A student wrote:

"Polar bears developed white fur during their lives because they needed to be camouflaged to catch seals."

a.

Explain why the student's statement is wrong.

[2]
b.

Explain how polar bears with white fur evolved from bears with darker fur.

[4]
c.

The Arctic is getting warmer, so there is less snow and ice. Suggest one way this could affect the polar bear population.

[1]
Markscheme

4.1 Evolution and natural selection Questions

  1. GCSE
  2. /Biology
  3. /4.1 Evolution and natural selection

44 exam-style questions on Edexcel GCSE Biology 4.1 Evolution and natural selection, covering 4.1.1 Work of Darwin and Wallace and 4.1.2 Resistant organisms and evolution. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank