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Date November 2013 Marks available 1 Reference code 13N.1.HL.TZ0.39
Level Higher level Paper Paper 1 Time zone TZ0
Command term Question number 39 Adapted from N/A

Question

What is the correct order of events in fertilization?
A. fusion of gametes, acrosome reaction and then cortical reaction
B. cortical reaction, fusion of gametes and then acrosome reaction
C. acrosome reaction, fusion of gametes and then cortical reaction
D. fusion of gametes, cortical reaction and then acrosome reaction

Markscheme

C

Examiners report

[N/A]

Syllabus sections

Additional higher level » Topic 11: Animal physiology » 11.4 Sexual reproduction
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