ZIMSEC O-Level Agriculture
5.3.4Crop improvement
Crop improvement in ZIMSEC O-Level Agriculture: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic22 practice questions1 lesson
Learning objectives
What the syllabus expects you to be able to do.
- 5.3.4.1Form 3: state the importance of crop breeding, explain heterosis and differentiate open from controlled pollination.
- 5.3.4.2Form 3: state the three types of maize hybrid and describe how single, double and three-way hybrids are produced.
Lessons
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Crop improvement and hybrid maize
40 min
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Sample question
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