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Cambridge IGCSE Biology practice

Paper 3 structured question: Selection

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Selection

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Paper 3Theory (Core)3 marks

Natural selection in a population of rabbits.

Description

Rabbit Population

A population of rabbits lives in an area with limited food resources. Some rabbits have a genetic trait that allows them to digest a wider variety of plants.

  1. a

    Describe how genetic diversity affects the rabbit population's survival.

    Aim for approximately 2 distinct marking points.

    [2]
  2. b

    State the role of advantageous traits in natural selection.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: Selection

Paper 3Theory (Core)3 marks

Diagram Description

Bird Beak Variation

A diagram shows birds with different beak shapes adapted to various food sources.

  1. a

    Identify the factor that leads to beak shape variation in birds.

    Aim for approximately 1 distinct marking point.

    [1]
  2. b

    Describe how natural selection affects beak shape in birds.

    Aim for approximately 2 distinct marking points.

    [2]