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Date May 2012 Marks available 2 Reference code 12M.3.HL.TZ1.2
Level Higher level Paper Paper 3 Time zone Time zone 1
Command term Distinguish Question number 2 Adapted from N/A

Question

Distinguish between innate and learned behaviour.

[1]
a.

Distinguish between analogous and homologous structures.

[2]
c.

Markscheme

innate behaviour is independent of experience/environmental conditions/inherited
while learned behaviour is influenced by experience/environment / OWTTE

a.

c.

Examiners report

Many gave vague answers to this section and did not make reference to the role of the environment or experience in distinguishing between the two types of behaviour. Candidates should not describe "learned‟ behaviour as that which we learn.

a.

The table was given so that candidates could easily distinguish between analogous and homologous structures clearly but some still did not compare like points.

c.

Syllabus sections

Core » Topic 5: Evolution and biodiversity » 5.4 Cladistics
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