AQA 84612H
GCSE
BIOLOGY
PAPER 2H
HIGHER
TIER MARK
SCHEME
AND
QUESTIONS
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 Evolution of new species occurs by mutation and natural selection.
0 1 . 1 What is a mutation?
[1 mark]
0 1 . 2 Describe the process of natural selection.
[3 marks]
0 1 . 3 Which scientists suggested the theory of evolution by natural selection?
[1 mark]
Tick () one box.
Alexander Fleming and Carl Woese
Alfred Wallace and Alexander Fleming
Alfred Wallace and Charles Darwin
Charles Darwin and Carl Woese
IB/H/Jun24/8461/2H
, 3
Do not write
outside the
0 1 . 4 The hoverfly and the wasp are insects with bright yellow and black markings. box
Figure 1 shows a hoverfly and a wasp.
Figure 1
The wasp has a sting to defend itself against predators.
The hoverfly does not have a sting.
Hoverflies and wasps live in the same habitat.
Explain how having yellow and black markings helps the hoverfly survive.
[3 marks]
8
Turn over for the next question
Turn over ►
IB/H/Jun24/8461/2H
, 4
Do not write
outside the
0 2 Peat bogs are estimated to contain twice as much carbon as all the world’s forests. box
Figure 2 shows a section through part of a peat bog.
Figure 2
Layer A contains a lot of air.
Layer B:
contains the dead remains of plants
has a low pH
contains very little oxygen
contains carbon dioxide and methane.
IB/H/Jun24/8461/2H
GCSE
BIOLOGY
PAPER 2H
HIGHER
TIER MARK
SCHEME
AND
QUESTIONS
, 2
Do not write
outside the
Answer all questions in the spaces provided. box
0 1 Evolution of new species occurs by mutation and natural selection.
0 1 . 1 What is a mutation?
[1 mark]
0 1 . 2 Describe the process of natural selection.
[3 marks]
0 1 . 3 Which scientists suggested the theory of evolution by natural selection?
[1 mark]
Tick () one box.
Alexander Fleming and Carl Woese
Alfred Wallace and Alexander Fleming
Alfred Wallace and Charles Darwin
Charles Darwin and Carl Woese
IB/H/Jun24/8461/2H
, 3
Do not write
outside the
0 1 . 4 The hoverfly and the wasp are insects with bright yellow and black markings. box
Figure 1 shows a hoverfly and a wasp.
Figure 1
The wasp has a sting to defend itself against predators.
The hoverfly does not have a sting.
Hoverflies and wasps live in the same habitat.
Explain how having yellow and black markings helps the hoverfly survive.
[3 marks]
8
Turn over for the next question
Turn over ►
IB/H/Jun24/8461/2H
, 4
Do not write
outside the
0 2 Peat bogs are estimated to contain twice as much carbon as all the world’s forests. box
Figure 2 shows a section through part of a peat bog.
Figure 2
Layer A contains a lot of air.
Layer B:
contains the dead remains of plants
has a low pH
contains very little oxygen
contains carbon dioxide and methane.
IB/H/Jun24/8461/2H
