IB Questionbank

User interface language: English | Español

Date	November 2018	Marks available	3	Reference code	18N.3.HL.TZ0.7
Level	Higher level	Paper	Paper 3	Time zone	TZ0 / no time zone
Command term	Suggest	Question number	7	Adapted from	N/A

Question

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.

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

Examiners report

[N/A]

Syllabus sections

Option A: Neurobiology and behaviour » Option A: Neurobiology and behaviour (Additional higher level topics) » A.6 Ethology

20N.3.HL.TZ0.8b:
Explain how natural selection can cause mate selection behaviour patterns to develop in a species such as eastern bluebirds.
20N.3.HL.TZ0.8c: Another type of behaviour is altruistic behaviour. Outline an example of altruistic behaviour.
17N.3.HL.TZ0.06a: State the effect of simulated ship noise on foraging behaviour.
17M.3.HL.TZ2.7b:
Suggest reasons for the length you stated in (a) being the most common length of M. edulis that C. maenas eat.
17M.3.HL.TZ2.7a: State the most common length of M. edulis eaten by the C. maenas population.
18M.3.HL.TZ1.7c:
Distinguish between innate behaviour and learned behaviour in the development of birdsong.
19N.3.HL.TZ0.7a: Courtship behaviour leads to mate selection. Describe innate behaviour.
18M.3.HL.TZ2.8:
Compare and contrast innate behaviour and learned behaviour.
20N.3.HL.TZ0.8a:
Evaluate the hypothesis that females prefer to mate with males whose feathers are a brighter blue.
19N.3.HL.TZ0.7b: Explain the implications of courtship behaviour in natural selection.
19M.3.HL.TZ2.6a.i:
Suggest a reason for the plateau in the graph when only one crab is present in the cage.
19M.3.HL.TZ2.6b: Outline the role of natural selection in animal behaviour.
19M.3.HL.TZ2.6a.ii:
Determine whether foraging by crabs is dependent on number of prey (mussels) or number of predators (crabs).
17N.3.HL.TZ0.06b:
Predict the consequences on C. maenas of increasing noise related to human activity.
18M.3.HL.TZ1.7d:
Outline an example of a change in animal behaviour as a result of natural selection.

Option A: Neurobiology and behaviour » Option A: Neurobiology and behaviour (Additional higher level topics)

Option A: Neurobiology and behaviour

Question

Markscheme

Examiners report

Syllabus sections

View options