CAIE IGCSE Biology 1.3.3 Classifying Animal Groups
Practise applying kingdom, vertebrate and arthropod features to classify unfamiliar organisms from diagrams and descriptions.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Practise applying kingdom, vertebrate and arthropod features to classify unfamiliar organisms from diagrams and descriptions.
Fig. 5.1 shows the different types of human teeth.

Fig. 5.1
Omnivores are animals that eat both animals and plants. Scientists use the number and types of teeth to classify animals as carnivores, herbivores or omnivores.
Table 5.1 shows examples of different types of mammals and their teeth.

Table 5.1
The skull of an unidentified mammal, X, is likely to be a carnivore. Discuss the evidence in Table 5.1 for and against classifying mammal X as a carnivore.
arguments for carnivore:
1 has same number of incisors as, other carnivores/5/6 ;
2 has same number of canines as, other carnivores 5/6 ;
3 has same number of molars as, 6/a carnivore ;
arguments against carnivore:
4 same number of premolars as, herbivores / 3/4;
5 1/2/3/some herbivores/omnivores, also have 12 incisors ;
6 1/2/3/some herbivores/omnivores, also have 4 canines ;
[max 4]