IB Biology SL 2.3.9 Meiosis and chromosome number Question Bank
Practise IB Biology SL 2.3.9 by tracing meiosis and explaining how chromosome number is halved.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Explain why meiosis is needed in a sexual life cycle.
- Identify chromosome numbers and key events in meiosis I and II.
D2.1.9—Meiosis as reduction division question 1
[Maximum number: 1]
The dolichos bean (Lablab purpureus) is cultivated as a food crop in tropical countries. Leaf cells in L. purpureus have 24 chromosomes.
State how many chromosomes there would be in male or female gametes of L. purpureus.
12;
No alternative.
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