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Year 7 Food Chains and Energy Transfer Worksheet (with Mark Scheme)
A printable Year 7 (KS3) biology homework worksheet on food chains and energy transfer. Students match key words, identify producers and consumers, build food chains, sort animals into herbivores, carnivores and omnivores, and use the 10% rule to calculate how much energy is passed along a food chain. A one-page mark scheme is included.
- Year 7
- KS3 Biology
- 41 marks
- About 35 minutes
- Free PDF
What the worksheet covers
| Section | Topic | What students do | Marks |
|---|---|---|---|
| A | Key words | Matching key words to definitions; gap fill (producer, photosynthesis, carnivore and more) | 11 |
| B | Food chains | Producers and consumers, trophic levels, what the arrows show, building a food chain, herbivores, carnivores and omnivores | 15 |
| C | Energy transfer | The 10% rule, energy calculations in kJ, how energy is lost, and why food chains are short | 15 |
| Total | 41 | ||
Skills students practise
- Using key ecology vocabulary correctly
- Reading and drawing food chains with arrows in the right direction
- Naming producers, primary and secondary consumers
- Calculating energy transfer with the 10% rule, showing working
- Explaining why food chains rarely have more than four or five levels
How to use it
- Download and print the worksheet, single- or double-sided.
- Set it as classwork, homework or a revision task.
- Use the mark scheme to mark it yourself, or let students self-assess or peer-assess.
Frequently asked questions
Does this worksheet come with answers?
Yes. A separate mark scheme (1 page, A4) gives the answers and marking guidance for all 41 marks.
Is the worksheet free?
Yes. Both PDFs are free to download, print and use with your own students.
Which level is it for?
It is written for Year 7, KS3. Always check it against your own scheme of work or exam specification.
More resources: Biology notes topic list · More Year 7 worksheets
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