Pleasewriteclearlyinblockvcapitals.
Centrenumber Candidatenumber
Surname v
Forename(s) v
Candidatevsignature
GCSE
BIOLOGY
HigherTier Paper2H
H
Monday 9 June2025 Morning Timeallowed:1hour45minutes
Materials
For Examiner’s Use
b b
Forthispapervyoumusthave:
aruler Question Mark
ascientific calculator.
b
1
2
Instructions
Use black ink orvblack ball-pointvpen.
b b b b
3
Pencilshouldonlybe usedforv drawing.
b
4
Fillvintheboxesat thetopofvthis page.
b b
5
Answervallvquestionsinthespaces provided. b
Ifvyouneedextraspaceforvyourvanswer(s),vusethelinedpagesvatvtheendofvthisvb
b b
6
ook.vWritethequestionvnumbervagainstvyourvanswer(s). 7
Dovallvroughwork inthisbook.vCrossthroughanyvwork youdonot want tovb
b b b b
8
evmarked.
9
Inallcalculations,v showclearlyhowyouworkout yourv answer. b
TOTAL
Information
Themaximummarkforthis paperv is100. b
Themarksforvquestionsarevshowninbrackets.
Youareexpectedtouseavcalculatorvwhereappropriate.
YouareremindedofvtheneedforvgoodEnglishandclearvpresentationvinvy
ovurvanswers.
IB/G/Jun25/G4006/E9 8461/2H
, 2
Do notvwrite
b
Answervallvquestions inthespacesprovided.
b
v outside the
b
box
0 1 vIchthyosaurs are reptiles thatvlivedvin the sea millionsvofvyears ago.
b b b
Figure 1showsthefossilisedremains ofvanichthyosaur.
b b
Figurev1
0 1 .v 1 Suggest howthefossilinFigurev1vwasformedaftertheichthyosaur vdied.
b
[2 marks]
b
0 1 .v 2 Thelengthoftheimageof vtheichthyosaurvinFigurev1vis120mm.
Thereallengthofv theichthyosaurv was17timeslongerthantheimageinFigure 1. b
Calculatethereallengthoftheichthyosaur.vGiveyo
urvanswervinmetres.
[3 marks]
b
Realvlengthvofvichthyosaurv=v metres
IB/G/Jun25/8461/2H
, 3
Do not write
b b
v outside
box
t b
0 1 .3 Table1givesthe classificationofv theichthyosaurinFigure1.
b he
Tablev1
Classificationgroup Name
Kingdom Animalia
Chordata
Class Reptilia
Order Ichthyosauria
Ichthyosauridae
Genus Ichthyosaurus
Species intermedius
CompleteTable1.
[2marks]
Chooseanswersfromthebox.
0 1 .v 4
Ichthyosaurswerepred
ators.vIvchthyosaursarenowe
xtinct.
Scientiststhinkthat extinctionofvtheichthyosaurswascausedbyincreasedvcov
b [2 marks]
b
mpetitionvwithvothervpredatorsvforfood.
Suggest twoothervpossiblecausesofvextinctionofvthe ichthyosaurs.
b b
1v
2v
9
IB/G/Jun25/8461/2H
, 4
Do not write
b b
v outside t
Turnover►
b
he
IB/G/Jun25/8461/2H
Centrenumber Candidatenumber
Surname v
Forename(s) v
Candidatevsignature
GCSE
BIOLOGY
HigherTier Paper2H
H
Monday 9 June2025 Morning Timeallowed:1hour45minutes
Materials
For Examiner’s Use
b b
Forthispapervyoumusthave:
aruler Question Mark
ascientific calculator.
b
1
2
Instructions
Use black ink orvblack ball-pointvpen.
b b b b
3
Pencilshouldonlybe usedforv drawing.
b
4
Fillvintheboxesat thetopofvthis page.
b b
5
Answervallvquestionsinthespaces provided. b
Ifvyouneedextraspaceforvyourvanswer(s),vusethelinedpagesvatvtheendofvthisvb
b b
6
ook.vWritethequestionvnumbervagainstvyourvanswer(s). 7
Dovallvroughwork inthisbook.vCrossthroughanyvwork youdonot want tovb
b b b b
8
evmarked.
9
Inallcalculations,v showclearlyhowyouworkout yourv answer. b
TOTAL
Information
Themaximummarkforthis paperv is100. b
Themarksforvquestionsarevshowninbrackets.
Youareexpectedtouseavcalculatorvwhereappropriate.
YouareremindedofvtheneedforvgoodEnglishandclearvpresentationvinvy
ovurvanswers.
IB/G/Jun25/G4006/E9 8461/2H
, 2
Do notvwrite
b
Answervallvquestions inthespacesprovided.
b
v outside the
b
box
0 1 vIchthyosaurs are reptiles thatvlivedvin the sea millionsvofvyears ago.
b b b
Figure 1showsthefossilisedremains ofvanichthyosaur.
b b
Figurev1
0 1 .v 1 Suggest howthefossilinFigurev1vwasformedaftertheichthyosaur vdied.
b
[2 marks]
b
0 1 .v 2 Thelengthoftheimageof vtheichthyosaurvinFigurev1vis120mm.
Thereallengthofv theichthyosaurv was17timeslongerthantheimageinFigure 1. b
Calculatethereallengthoftheichthyosaur.vGiveyo
urvanswervinmetres.
[3 marks]
b
Realvlengthvofvichthyosaurv=v metres
IB/G/Jun25/8461/2H
, 3
Do not write
b b
v outside
box
t b
0 1 .3 Table1givesthe classificationofv theichthyosaurinFigure1.
b he
Tablev1
Classificationgroup Name
Kingdom Animalia
Chordata
Class Reptilia
Order Ichthyosauria
Ichthyosauridae
Genus Ichthyosaurus
Species intermedius
CompleteTable1.
[2marks]
Chooseanswersfromthebox.
0 1 .v 4
Ichthyosaurswerepred
ators.vIvchthyosaursarenowe
xtinct.
Scientiststhinkthat extinctionofvtheichthyosaurswascausedbyincreasedvcov
b [2 marks]
b
mpetitionvwithvothervpredatorsvforfood.
Suggest twoothervpossiblecausesofvextinctionofvthe ichthyosaurs.
b b
1v
2v
9
IB/G/Jun25/8461/2H
, 4
Do not write
b b
v outside t
Turnover►
b
he
IB/G/Jun25/8461/2H
