CAIE IGCSE Biology 1 Characteristics & Classification
Practise identifying life processes and classifying organisms through visible features, DNA evidence, keys and scientific names.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Practise identifying life processes and classifying organisms through visible features, DNA evidence, keys and scientific names.
Define the term sensitivity.
ability to detect and respond to changes in the environment;
Viruses can cause diseases.
State two other features of all viruses.
1
2
genetic material ;
protein coat ;
parasitic / pathogenic ;
only reproduce in a host / do not show (other) features of living
organisms / AW ;
very small ;
they are not cellular / absence of named organelle;
AVP ; cannot be killed / cannot be treated, with antibiotics.
A DNA / RNA
A virus are non-living.
Fig. 6.1 shows four different viruses.

Fig. 6.1
Suggest one feature that could be used to classify viruses into groups.
shape / size / AW ;
genetic material (sequence / type) ;
host species / type of disease it causes ;
AVP ;
Dicotyledons and monocotyledons belong to the plant kingdom.
State two main features of plants.
Any two from: multicellular; producer / photosynthesises / has chloroplasts or chlorophyll; cellulose cell wall; non-motile; reproduces sexually and/or asexually; another valid feature.
State the names of two other kingdoms.
Any two from: animal; fungi; protoctist; prokaryote.
Fig. 3.1 shows part of a classification diagram for plants.
Describe two identifying features of monocotyledons.
1
2
any two from:
one seed leaf / one cotyledon ;
parallel veins ;
adventitious / fibrous, roots ;
flower parts in multiples of three ;
vascular bundles throughout stem / AW ;
narrow leaves ;
Fig. 3.3 shows the parts of two flowers from two different plants of the same species.

Fig. 3.3
Describe what is meant by the term species.
(a group of) organisms that can reproduce ;
to produce fertile offspring ;