6.2 Variation and evolution

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Question 5
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Glufosinate is a broad-spectrum herbicide used in agriculture to control weed growth.

Canola (oilseed rape) plants have been genetically modified (GM) to carry a gene that makes them resistant to glufosinate.

A farmer can increase the yield of canola seeds by:

  • growing GM canola plants
  • spraying glufosinate on the field.
a.

Explain how the use of GM canola plants and the spraying of glufosinate can increase the yield of canola seeds.

[6]
b.

Suggest two reasons why some people are concerned about the cultivation or consumption of GM canola plants. Do not refer to ethical concerns or religion in your answer.

[4]

6.2 Variation and evolution Questions

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