IB Biology HL 8.3.3 Oxygen from photolysis Question Bank
Practise IB Biology HL 8.3.3 by analysing photolysis, oxygen evolution and evidence from photosynthetic organisms.
- Syllabus
- First assessment 2025
- Course
- Biology HL
- Level
- HL
Exam points
- Analyse photolysis evidence to explain how light energy splits water and produces oxygen.
- Evaluate oxygen-evolution observations across photosynthetic organisms and experimental conditions.
C1.3.3—Oxygen as by-product question 1
[Maximum number: 1]
Which group(s) produce(s) oxygen as a by-product of photosynthesis?
I. Algae
II. Cyanobacteria
III. Fungi
A
I only
B
I and II only
C
II and III only
D
I, II and III
B
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