# Explain how cells, tissues, and organs are related to each other in a multicellular organism. Use an example of a named tissue and a named organ in your answer.

> AQA GCSE Biology (8461) — 4.2.1 Principles of organisation · Explain · 4 marks

## Mark scheme (4 marks)

1. A tissue is a group of cells with a similar structure and function
2. An organ is an aggregation/collection of tissues that performs a specific function
3. Correct named example of a tissue (e.g. muscle tissue, palisade mesophyll, xylem, phloem, spongy mesophyll, blood)
4. Correct named organ that logically links to or contains the named tissue (e.g. heart contains muscle tissue; leaf contains palisade mesophyll)

## Key terms

- [cell](https://www.gradenine.co.uk/glossary/cell)
- [tissue](https://www.gradenine.co.uk/glossary/tissue)
- [organ](https://www.gradenine.co.uk/glossary/organ)

## Related

- [Revision notes for AQA GCSE Biology (8461)](https://www.gradenine.co.uk/learn)
- [How to answer "Explain" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
- [Practice this with AI marking (free)](https://www.gradenine.co.uk/start)

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Source: [GradeNine](https://www.gradenine.co.uk/q/explain-how-cells-tissues-and-organs-05137d2b) · Published by Druglandscape Ltd.