Oxford Cambridge and RSA
A Level Biology A
H420/02 Biological diversity
Practice paper – Set 2
Time allowed: 2 hours 15 minutes
* 2 0 1 6 *
You must have:
• the Insert (Inserted)
You may use:
• a scientific or graphical calculator
• a ruler
First name
Last name
Centre Candidate
number number
INSTRUCTIONS
• Use black ink. You may use an HB pencil for graphs and diagrams.
• Complete the boxes above with your name, centre number and candidate number.
• Answer all the questions.
• Write your answer to each question in the space provided. If additional space is
required, use the lined page(s) at the end of this booklet. The question number(s) must
be clearly shown.
• Do not write in the barcodes.
INFORMATION
• The total mark for this paper is 100.
• The marks for each question are shown in brackets [ ].
• Quality of extended responses will be assessed in questions marked with an
asterisk (*).
• This document consists of 32 pages.
© OCR 2016 Practice paper OCR is an exempt Charity
DC (CE/FC) 143552/4 Turn over
, 2
SECTION A
You should spend a maximum of 20 minutes on this section.
Write your answer to each question in the box provided.
Answer all the questions.
1 Scientists sequenced the DNA of the common house spider and four other species a, b, c and d
that look similar. Analysis revealed the following differences from the DNA of the common house
spider.
Species Number of differences from DNA
of common house spider
a 23
b 72
c 6
d 18
Which phylogenetic tree matches these data?
A B a
a b
common house
spider c
c b
common house d
d spider
common house
C common house D
spider
c spider
d a
a c
b
b
d
Your answer [1]
© OCR 2016 Practice paper H420/02 Dec16
, 3
2 A patient has been diagnosed with an autoimmune disease.
Which of the treatments, A to D, is most likely to relieve the symptoms?
A a course of antibiotics
B a vaccination containing antibodies
C drugs to suppress the immune system
D surgery to remove the affected parts
Your answer [1]
3 The list below describes some types of plant found during primary succession on a sand dune.
i a legume that contains nitrogen fixing bacteria
ii hardy grasses that can resist desiccation
iii large mature trees
iv small herbs that can tolerate salty spray
v small trees and bushes
In which order are these plants most likely to grow successfully?
A i – ii – iii – iv – v
B ii – v – iv – i – iii
C ii – iv – i – v – iii
D ii – iv – iii – v – i
Your answer [1]
© OCR 2016 Practice paper H420/02 Dec16 Turn over
, 4
4 The following statements are about organisms that cause disease.
1 Athletes foot and ringworm are caused by fungi.
2 Malaria and tuberculosis are caused by protoctistans.
3 Ring rot and black sigatoka are caused by bacteria.
Which of the statement(s) is/are correct?
A 1, 2 and 3
B only 1 and 2
C only 2 and 3
D only 1
Your answer [1]
5 Which of the graphs, A to D, represents the energy changes involved during an enzyme-controlled
anabolic reaction?
A B
energy energy
course of reaction course of reaction
C D
energy energy
course of reaction course of reaction
Your answer [1]
© OCR 2016 Practice paper H420/02 Dec16
A Level Biology A
H420/02 Biological diversity
Practice paper – Set 2
Time allowed: 2 hours 15 minutes
* 2 0 1 6 *
You must have:
• the Insert (Inserted)
You may use:
• a scientific or graphical calculator
• a ruler
First name
Last name
Centre Candidate
number number
INSTRUCTIONS
• Use black ink. You may use an HB pencil for graphs and diagrams.
• Complete the boxes above with your name, centre number and candidate number.
• Answer all the questions.
• Write your answer to each question in the space provided. If additional space is
required, use the lined page(s) at the end of this booklet. The question number(s) must
be clearly shown.
• Do not write in the barcodes.
INFORMATION
• The total mark for this paper is 100.
• The marks for each question are shown in brackets [ ].
• Quality of extended responses will be assessed in questions marked with an
asterisk (*).
• This document consists of 32 pages.
© OCR 2016 Practice paper OCR is an exempt Charity
DC (CE/FC) 143552/4 Turn over
, 2
SECTION A
You should spend a maximum of 20 minutes on this section.
Write your answer to each question in the box provided.
Answer all the questions.
1 Scientists sequenced the DNA of the common house spider and four other species a, b, c and d
that look similar. Analysis revealed the following differences from the DNA of the common house
spider.
Species Number of differences from DNA
of common house spider
a 23
b 72
c 6
d 18
Which phylogenetic tree matches these data?
A B a
a b
common house
spider c
c b
common house d
d spider
common house
C common house D
spider
c spider
d a
a c
b
b
d
Your answer [1]
© OCR 2016 Practice paper H420/02 Dec16
, 3
2 A patient has been diagnosed with an autoimmune disease.
Which of the treatments, A to D, is most likely to relieve the symptoms?
A a course of antibiotics
B a vaccination containing antibodies
C drugs to suppress the immune system
D surgery to remove the affected parts
Your answer [1]
3 The list below describes some types of plant found during primary succession on a sand dune.
i a legume that contains nitrogen fixing bacteria
ii hardy grasses that can resist desiccation
iii large mature trees
iv small herbs that can tolerate salty spray
v small trees and bushes
In which order are these plants most likely to grow successfully?
A i – ii – iii – iv – v
B ii – v – iv – i – iii
C ii – iv – i – v – iii
D ii – iv – iii – v – i
Your answer [1]
© OCR 2016 Practice paper H420/02 Dec16 Turn over
, 4
4 The following statements are about organisms that cause disease.
1 Athletes foot and ringworm are caused by fungi.
2 Malaria and tuberculosis are caused by protoctistans.
3 Ring rot and black sigatoka are caused by bacteria.
Which of the statement(s) is/are correct?
A 1, 2 and 3
B only 1 and 2
C only 2 and 3
D only 1
Your answer [1]
5 Which of the graphs, A to D, represents the energy changes involved during an enzyme-controlled
anabolic reaction?
A B
energy energy
course of reaction course of reaction
C D
energy energy
course of reaction course of reaction
Your answer [1]
© OCR 2016 Practice paper H420/02 Dec16
