D3.1.3—Male vs. female sexes Topic Practice
D3.1.3—Male vs. female sexes Topic Practice

IB Biology syllabusBiology SL/HLFirst assessment 2025
Students practise distinguishing male and female gametes by size, motility, number, and cytoplasmic resource content in reproductive biology contexts.
How this is tested
- translate Male vs. female sexes wording into the required equation, diagram or calculation
- interpret the final result in the context of the data or model used
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