IB Biology SL A4.1.5 Convergent Evolution Questions
Compare convergent and divergent evolution, explain analogous structures and identify evidence from wings, eyes and other examples.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Compare convergent and divergent evolution using ancestry, environments and resulting structures.
- Explain how analogous structures can evolve independently under similar selection pressures.
- Use wings, eyes or other examples to identify convergent evolution.
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IB Biology SL A4.1.5 Convergent Evolution Questions question 1
[Maximum number: 4]
Convergent evolution increases similarities, despite differences in origins.
Explain how analogous structures can evolve.
a. evolution occurs by natural selection;
b. analogous structures come from convergent evolution;
c. analogous structures have similar functions or structures evolved from different ancestry;
d. similar conditions/environments have similar selective pressures favouring similar adaptations;
e. similar functions/functional requirements result in similar adaptations/structures;
f. e. g. torpedo shaped body in sharks and whales to facilitate swimming/ another verified example;
4
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