IB Biology SL 4.1.7 Sexual Selection
Practise identifying how showy plumage and courtship behaviour can influence mate choice and reproductive success.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Identify courtship traits and explain how mate choice affects reproductive success.
D4.1.7—Sexual selection question 1
A bird of paradise (Ptiloris victoriae) has very showy plumage and demonstrates a unique dance.
What type of selection pressure could have caused this plumage to evolve?
A
Interspecific competition
B
Abiotic factors
C
Paradigm shift
D
Sexual selection
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