Exam (elaborations)
AQA Biology 2019 Paper 2 Higher Tier
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- University Of South Africa (Unisa)
AQA Biology 2019 Paper 2 Higher Tier
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iPlease iwrite iclearly iin iblock icapitals.
Centre inumber Candidate inumber
i
Surname
i
Forename(s)
Candidate isignat ure i
GCSE
BIOLOGY
Higher Tier i Paper 2H
i
H
Friday 7 June 2019
i i i Afternoon Timeallowed:1 hour45minutes
i i i i i
Materials For iExaminer’s iUse
For ithis ipaper iyou imust ihave:
a iruler Question Mark
a iscientific icalculator. 1
2
Instructions
3
Use iblack iink ior iblack iball-point ipen.
Fill iin ithe iboxes iat ithe itop iof ithis ipage. 4
Answer iall iquestions iin ithe ispaces iprovided. 5
Do iall irough iwork iin ithis ibook. iCross ithrough iany iwork iyou ido inot iwant ito
6
ibe imarked.
In iall icalculations, ishow iclearly ihow iyou iwork iout iyour ianswer. 7
8
Information
The imaximum imark ifor ithis ipaper iis i100. TOTAL
The imarks ifor iquestions iare ishown iin ibrackets.
You iare iexpected ito iuse ia icalculator iwhere iappropriate.
You iare ireminded iof ithe ineed ifor igood iEnglish iand iclear ipresentation
iin iyour ianswers.
*JUN19 4612h01*
i
IB/M/Jun19/E10 8461/2H
, 2
Do not write
outside ithe
Answer iall iquestions iin ithe ispaces iprovided. ibox
0 1 Figure i1 ishows ia ifood ichain iin ia ipond.
Figure i1
0 1 . 1 Which iterm idescribes ithe iDaphnia iin ithis ifood ichain?
[1 imark]
Tick i() ione ibox.
Apex ipredator
Primary iconsumer
Producer
Secondary iconsumer
*02*
IB/M/Jun19/8461/2H
, 3
Do not write
outside the
0 1 . 2 Draw ia ipyramid iof ibiomass ifor ithe ifood ichain. box
Label ieach itrophic ilevel.
[2 imarks]
0 1 . 3 Give ione ireason iwhy ithe itotal ibiomass iof ithe iDaphnia iin ithe ipond iis idifferent ifrom
ithe itotal ibiomass iof ithe ialgae.
[1 imark]
Question i1 icontinues ion ithe inext ipage
Turn iover i►
*03*
IB/M/Jun19/8461/2H
, 4
Do not write
outside the
Students iinvestigated ithe isize iof ithe ipopulation iof iDaphnia iin ithe ipond. box
This iis ithe imethod iused.
1. Collect i1 idm3 iof ipond iwater ifrom inear ithe iedge iof ithe ipond.
2. Pour ithe iwater ithrough ia ifine inet.
3. Count ithe inumber iof iDaphnia icaught iin ithe inet.
4. Repeat isteps i1–3 ifour imore itimes.
Table i1 ishows ithe iresults.
Table i1
Number iof iDaphnia
Sample inumber 3
iin i1 idm iwater
1 5
2 21
3 0
4 16
5 28
0 1 . 4 Calculate ithe imean inumber iof iDaphnia iin i1 im3 iof ipond iwater.
1 im3 i= i1000 idm3
[2 imarks]
Mean inumber iof iDaphnia iin i1 im3 iof ipond iwater i= iii
*04*
IB/M/Jun19/8461/2H
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