# A student finds an unknown organism in a garden. The organism has a segmented body, three pairs of jointed legs, one pair of antennae and two pairs of wings. State the class to which this organism belongs and describe three other features of organisms in this class that could be used to confirm this identification.

> Cambridge International IGCSE Biology (0610) — 1.2 Concept and use of a classification system · Describe · 4 marks

## Mark scheme (4 marks)

1. Correctly identifies the class as Insecta / insects
2. Body is divided into three regions: head, thorax and abdomen
3. Has compound eyes
4. Has an exoskeleton / hard external skeleton (cuticle)

## Key terms

- [class](https://www.gradenine.co.uk/glossary/class)

## Related

- [Revision notes for Cambridge International IGCSE Biology (0610)](https://www.gradenine.co.uk/learn)
- [How to answer "Describe" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
- [Practice this with AI marking (free)](https://www.gradenine.co.uk/start)

---
Source: [GradeNine](https://www.gradenine.co.uk/q/a-student-finds-an-unknown-organism-841e9bf7) · Published by Druglandscape Ltd.