About this microorganisms: helpful and harmful practice
Microorganisms: helpful and harmful is taught in KS2 Year 6 (ages 10-11) as part of the England national curriculum. This free practice set covers tiny living things - bacteria, viruses and fungi - and how they help or harm us through 30 interactive questions, working up from easy warm-ups to harder problems.
What you'll practise
Each session gives you 30 questions in mixed difficulty: a few simple ones to start, some two-step questions next, then word problems at the end. If you get stuck, tap for a hint. After every answer you get a short explanation, right or wrong, so you can see why.
Question types in this set: multiple choice, word matching, true or false, fill the blank, drag-to-order.
Example question
What is a microorganism?
Curriculum coverage
This is on the KS2 Science programme of study for Year 6. The questions follow the same order schools use, starting with concrete examples and moving on to more abstract reasoning, so practice here lines up with what your child is doing in lessons. British English throughout, with British units, currency and spelling.
Frequently asked questions
- What is microorganisms: helpful and harmful in KS2 science?
- Tiny living things - bacteria, viruses and fungi - and how they help or harm us. It is on the KS2 science curriculum for Year 6 and gets revisited in later years too.
- What year group is microorganisms: helpful and harmful taught in?
- Microorganisms: helpful and harmful is first introduced in Year 6. Children usually meet it again in later years as the work gets harder.
- Is the microorganisms: helpful and harmful practice really free?
- Yes. All 30 questions are free, with no signup, no payment and no time limit. Your progress is saved in your browser.
- How does the practice work?
- Each session gives you 10 questions of mixed difficulty. Correct answers add 8 to 12 points to your SmartScore; wrong answers take some off. Get to 80 to mark the concept as complete. Hints are there if you need them, and every answer comes with a short explanation.
Related science concepts
- ❤️Human body: circulation & health
- 🧬Evolution & adaptation
- 🔬Classification of living things
- 🌈Light: reflection & refraction
More practice by year
Practice content matched to the England national curriculum for KS2 (Year 6). Questions use British English throughout.
Get a paper version of these questions with an answer key.