AQA GCSE · Question 07.3 · Inheritance Variation and Evolution
What is the binomial name of trilobite A? Use information from Table 3.
Answer options:
A.
Arthropoda kingii
B.
Elrathia kingii
C.
Trilobita kingii
How to approach this question
The binomial name (or scientific name) of an organism is formed from two parts: its Genus name and its species name.
1. Find the "Genus" row in Table 3 and read the name for Trilobite A.
2. Find the "Species" row and read the name for Trilobite A.
3. Combine these two names, with the Genus name first.
Full Answer
B.Elrathia kingii✓ Correct
Elrathia kingii
The binomial system of naming organisms, developed by Linnaeus, gives each species a unique two-part name. The first part is the Genus name (always capitalised) and the second part is the species name (always lowercase). From Table 3, for Trilobite A:
- Genus = *Elrathia*
- Species = *kingii*
Therefore, the binomial name is *Elrathia kingii*.
Common mistakes
✗ Combining the wrong classification levels, e.g., Phylum and species.
✗ Getting the order wrong (species then Genus).
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