AS BIOLOGY
PAPER 2
7401/2
QUESTION PAPER
, 1
Do not write outside the
. box
AS BIOLOGY
Paper 2
Materials
For this paper you must have:
For Examiner’s Use
• a ruler with millimetre measurements • a scientific calculator.
Instructions Question Mark
• Use black ink or black ball-point pen.
1
• Fill in the boxes at the top of this page.
• Answer all questions. 2
• You must answer the questions in the spaces provided. Do not write outside the
box around each page or on blank pages. 3
• 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). 4
• Show all your working.
• Do all rough work in this book. Cross through any work you do not want to be 5
marked.
6
Information 7
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 75. 8
9
TOTAL
7401/2
Answer all questions in the spaces provided.
Turn over ►
IB/M/Jun20/7401/2
, 2
Do not write
outside the
box
0 1
.1
Littorina littorea is a species of snail found on rocky sea shores.
A student investigated variation in snail shell height in two populations of snails.
Give two ways in which the student could ensure his samples would provide a reliable
measure of the variation between individuals in each population.
[2 marks]
1
2
0 1
.2 The student could determine the median, mode and range from his measurement of shell
heights in these populations.
Give two other statistical values the student could calculate from his measure shell
heights in these populations.
1 ment
of
2
[1
mark]
IB/M/Jun20/7401/2
, 3
Do not write outside the
. box
Name the taxon in the hierarchy of classification represented by:
0 1 [1 mark]
.3 1 Littorina
2 Iittorea
*02*
Turn over ►
IB/M/Jun20/7401/2
PAPER 2
7401/2
QUESTION PAPER
, 1
Do not write outside the
. box
AS BIOLOGY
Paper 2
Materials
For this paper you must have:
For Examiner’s Use
• a ruler with millimetre measurements • a scientific calculator.
Instructions Question Mark
• Use black ink or black ball-point pen.
1
• Fill in the boxes at the top of this page.
• Answer all questions. 2
• You must answer the questions in the spaces provided. Do not write outside the
box around each page or on blank pages. 3
• 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). 4
• Show all your working.
• Do all rough work in this book. Cross through any work you do not want to be 5
marked.
6
Information 7
• The marks for the questions are shown in brackets.
• The maximum mark for this paper is 75. 8
9
TOTAL
7401/2
Answer all questions in the spaces provided.
Turn over ►
IB/M/Jun20/7401/2
, 2
Do not write
outside the
box
0 1
.1
Littorina littorea is a species of snail found on rocky sea shores.
A student investigated variation in snail shell height in two populations of snails.
Give two ways in which the student could ensure his samples would provide a reliable
measure of the variation between individuals in each population.
[2 marks]
1
2
0 1
.2 The student could determine the median, mode and range from his measurement of shell
heights in these populations.
Give two other statistical values the student could calculate from his measure shell
heights in these populations.
1 ment
of
2
[1
mark]
IB/M/Jun20/7401/2
, 3
Do not write outside the
. box
Name the taxon in the hierarchy of classification represented by:
0 1 [1 mark]
.3 1 Littorina
2 Iittorea
*02*
Turn over ►
IB/M/Jun20/7401/2
