Describe the binomial system used to name living organisms.

WJEC GCSE Biology (Wales) — 2.1.1 Classification · Describe · 4 marks · View as Markdown

Written & reviewed by James Millett — Biology (Imperial College London), PGCE Science (University of Cambridge).

Model answer (4 marks)

Each organism is given a two‑part name.
1. The first part is the genus (generic) name.
2. The second part is the species (specific) name.
3. Both parts are written in Latin.
4. The system is internationally recognised and understood by scientists worldwide.

Examiner tips

Use the exact wording: two‑part name, genus, species, Latin, internationally recognised.
Show the order: genus first, species second.
Mention that it is used worldwide by scientists.
Keep the answer concise to fit the 4 marks.

Common mistakes

Writing the species name before the genus.
Using English words instead of Latin.
Omitting that the names are internationally recognised.

Mark scheme (4 marks)

Each organism is given two names / a two-part name
The first name is the genus (generic name)
The second name is the species (specific name)
Names are written in Latin / internationally recognised / understood by scientists worldwide

Key terms in this question

binomial system