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5.2 Natural selection and evolution

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Question 7
F

Some plant species are at risk of extinction.

A seedbank collects and stores seeds from many different plant species.

  • The seeds are dried until they contain very little water.
  • The seeds are then stored at −20 ∘C-20\ ^\circ\text{C}−20 ∘C.
a.

Give one reason why seedbanks are important.

[1]
b.

Suggest why the seeds are dried and then stored at −20 ∘C-20\ ^\circ\text{C}−20 ∘C.

[2]
c.

The seedbank collects seeds of one species from many different populations, in different places.

Explain why this is useful if the environment changes in the future.

[3]
Markscheme

5.2 Natural selection and evolution Questions

  1. GCSE
  2. /Biology
  3. /5.2 Natural selection and evolution

122 exam-style questions on OCR GCSE Biology 5.2 Natural selection and evolution, covering 5.2.1 Genetic variation within a population, 5.2.2 Developments in classification systems, 5.2.3 How evolution occurs through natural selection, 5.2.4 Evolution as change over time, 5.2.5 Evidence for evolution, and 5.2.6 Darwin and Wallace. Each one has a worked solution and a mark scheme showing where the marks go.

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