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Cambridge IGCSE Biology practice

Paper 4 structured question: Conservation

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Conservation

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Paper 4Theory (Extended)3 marks

A small population of a species is less able to survive environmental changes compared to a large population.

Description

Population Size and Survival

Scientists observe that small populations often struggle to adapt to new diseases or climate changes.

  1. a

    Explain why a small population size can reduce a species' ability to survive and adapt.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 4 structured question: Conservation

Paper 4Theory (Extended)2 marks

Description

Population Decline

The population size of a species has decreased due to habitat loss and hunting. Scientists are concerned about the long-term survival of this species.

  1. a

    Explain how a decline in population size can affect the genetic diversity of the species.

    Aim for approximately 2 distinct marking points.

    [2]