ZIMSEC O-Level Biology
8.18.2Selection
Selection in ZIMSEC O-Level Biology: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic22 practice questions1 lesson
Overview
Form 4.
Learning objectives
What the syllabus expects you to be able to do.
- 8.18.2.1Define evolution and explain natural selection in terms of variation, competition, survival of the better adapted and reproduction.
- 8.18.2.2Describe how and why artificial selection is used to improve crops and livestock, for example for productivity, quality and resistance to drought and disease.
Lessons
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Natural and artificial selection
19 min
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Sample question
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