CAIE IGCSE Biology 9.1.2 Single Circulation of a Fish Questions
Practise tracing blood from the fish heart through gills and body tissues before it returns to the heart.
- Syllabus
- 2026–2028
- Course
- Biology 0610
Exam points
- Trace blood from the fish heart to the gills, through body tissues and back to the heart.
- Explain that blood passes through the fish heart once in each complete circuit of the body.
CAIE IGCSE Biology 9.1.2 Single Circulation of a Fish Questions question 1
Fig. 6.1 shows diagrams of the circulatory systems of a fish and a mammal.
The arrows show the direction of blood flow through the circulatory systems.
Fig. 6.1
Fig. 6.1 shows that fish and mammals have different types of circulation.
State why the fish circulation is called a single circulation.
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