ZIMSEC O-Level Biology
8.5.1Nutrition
Nutrition in ZIMSEC O-Level Biology: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic83 practice questions4 lessons
Overview
Form 3.
Learning objectives
What the syllabus expects you to be able to do.
- 8.5.1.1Define photosynthesis, state its word equation, investigate the conditions it needs (chlorophyll, light, carbon dioxide) and explain its importance in ecosystems.
- 8.5.1.2Investigate how light intensity, carbon dioxide concentration and temperature affect the rate of photosynthesis, as limiting factors.
- 8.5.1.3Relate the structure of the leaf to photosynthesis, and investigate gaseous exchange in plants and the distribution of stomata.
- 8.5.1.4Describe the roles of nitrogen, phosphorus and potassium in plant growth and the signs of their deficiency.
Lessons
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Leaf structure and adaptations for photosynthesis
25 min
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Mineral nutrition in plants
25 min
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Photosynthesis
25 min
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Rate of photosynthesis, limiting factors and gas exchange
30 min
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Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
Exam style
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