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Please check the examination details below before entering your candidate information
2022 xcel B
Candidate surname Other names
Ede
Centre Number Candidate Number
Pearson Edexcel Level 3 GCE
Paper
Time 1 hour 30 minutes
reference 8BN0/02
Biology A (Salters Nuffield)
Advanced Subsidiary
PAPER 2: Development, Plants and the Environment
You must have: Total Marks
Calculator, HB pencil, ruler
Instructions
• Fill
Use black ink or ball‑point pen.
• centrein the boxes at the top of this page with your name,
number and candidate number.
• Answer all questions.
• Answer
Show all your working out in calculations and include units where appropriate.
• – there maythe questions in the spaces provided
be more space than you need.
Information
• The total mark for this paper is 80.
• –Theusemarks for each question are shown in brackets
this as a guide as to how much time to spend on each question.
• You may use a scientific calculator.
• structure
In questions marked with an asterisk (*), marks will be awarded for your ability to
your answer logically, showing how the points that you make are related
or follow on from each other where appropriate.
Advice
• Read each question carefully before you start to answer it.
• Try to answer every question.
• your answers if you have time at the end.
Check
Answer ALL questions. Write your answers in the spaces provided.
Ede
Some questions must be answered with a cross in a box . If you change your mind about an
answer, put a line through the box and then mark your new answer with a cross .
1 Plant cells are organised into tissues, organs and systems.
(a) The diagram shows a plant cell, as seen using an electron microscope.
A
B
C
D
(i) Which structure contains pits?
(1)
A
B
C
D
(ii) Which structure could be reinforced with lignin?
(1)
A
B
C
D
(iii) Which structure contains vesicles?
(1)
A
B
C
D
2
*P69495A0224*
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2022 xcel B
(b) Plants contain xylem tissue.
Ede
(i) Describe what is meant by the term tissue.
(2)
(ii) It is possible to investigate the location of xylem tissue in a plant stem by
using a microscope.
The following method is used:
1. cut the stem of a broad bean plant just above soil level
2. place the cut end of the stem in a beaker of coloured dye for 30 minutes
3. cut thin sections of the stem to view using the microscope.
Explain why the plant is left in the dye for 30 minutes before cutting sections
through the stem.
(2)
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