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Question 18N.3.HL.TZ0.7

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Date November 2018 Marks available [Maximum mark: 3] Reference code 18N.3.HL.TZ0.7
Level HL Paper 3 Time zone TZ0
Command term Suggest Question number 7 Adapted from N/A
7.
[Maximum mark: 3]
18N.3.HL.TZ0.7

The drawing shows male and female Emperor birds of paradise (Paradisaea guilielmi ) found in Papua New Guinea.

 

Suggest how the external features and courtship behaviour of these birds of paradise affect reproductive success.

[3]

Markscheme

a. males’ long feathers/plumage/bright colours attract mate
OR
dance/vocalizations attract mate ✔

b. males compete for the females to reproduce ✔

c. characteristics also make males more vulnerable to predation ✔

d. males survive despite having huge tails/extreme features ✔

e. «natural selection» has benefited the most colourful/attractive males with best reproductive success/fitness/passing genes to offspring ✔

OWTTE

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