2020 QUESTON PAPER (VERIFIED
QUESTIONS 2020)
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AQA A - LEVEL
Biology Paper 3 2020
QP
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Centre number Candidate number
Surname
Forename(s)
Candidate signature
I declare this is my own work.
A-level
BIOLOGY
Paper 3
Monday 15 June 2020 Morning Time allowed: 2 hours
Materials
For this paper you must have: For Examiner’s Use
• a ruler with millimetre measurements
Question Mark
• a scientific calculator.
1
Instructions 2
• Use black ink or black ball-point pen.
3
• Fill in the boxes at the top of this page.
• Answer all questions in Section A. 4
• Answer one question from Section B. 5
• You must answer the questions in the spaces provided. Do not write 6
outside the box around each page or on blank pages.
7
• If you need extra space for your answer(s), use the lined pages at the end of
this book. Write the question number against your answer(s). TOTAL
• Show all your working.
• Do all rough work in this book. Cross through any work you do not want
to be marked.
Information
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 78.
*JUN2074023
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Do not write
outside the
Section A box
Answer all questions in this section.
You are advised to spend no more than 1 hour and 15 minutes on this section.
0 1 Guppies are small fish. Female guppies are dull in colour. Male guppies can be
bright or dull in colour.
Scientists investigated the effect of female brain size on choosing a mate. They used
laboratory-bred female guppies with large brains and with small brains.
They set up a fish tank as shown in Figure 1.
Figure 1
They observed each female for 10 minutes and recorded which male they were
attracted towards. They repeated this with 45 large-brained females and
45 small-brained females.
0 1 . 1 Suggest three possible limitations of this investigation.
[3 marks]
1
2
3
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