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ZIMSEC O-Level Biology

Experimental skills

Experimental skills in ZIMSEC O-Level Biology: what the syllabus expects you to know, the learning objectives and how to practise.
Topic43 practice questions2 lessons

Overview

Not one of the eleven syllabus topics: groups the practical and experimental skills that the syllabus objectives require and that Paper 3 (practical examination) and the practical tests of continuous assessment assess. Practical-skills content is tagged here.

Learning objectives

What the syllabus expects you to be able to do.

  1. P.1Handle apparatus, specimens and chemicals safely and accurately, and follow instructions.
  2. P.2Plan and carry out investigations, controlling variables and using control experiments.
  3. P.3Make and record observations and measurements, draw biological specimens, present results in tables and graphs, interpret them and evaluate procedures.

Lessons

  • Planning investigations

    22 min

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  • Recording, presenting and evaluating results

    25 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Experimental skills: sample question

1 mark

Nyasha puts 20 bean seeds on damp cotton wool in each of five dishes, which she keeps at 10, 15, 20, 25 and 30 °C. After 4 days she counts how many seeds have germinated in each dish. What is the independent variable?

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