Oxford Cambridge and RSA Examinations GCEBiology AH020/02: Depth in biologyAS Level with 100% correct marking scheme.

Oxford Cambridge and
RSA Examinations
GCEBiology AH020/02:
Depth in biologyAS
Level with 100% correct
marking scheme.

, Oxford Cambridge and RSA

Thursday 25 May 2023 – Morning
AS Level Biology A
H020/02 Depth in biology
Time allowed: 1 hour 30 minutes

You can use:
* 9 8 7 8 7 0 3 7 1 5 *




• a scientific or graphical calculator
• a ruler (cm/mm)




* H 0 2 0 0 2 *




Please write clearly in black ink. Do not write in the barcodes.

Centre number Candidate number


First name(s)

Last name


INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.

INFORMATION
• The total mark for this paper is 70.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 28 pages.

ADVICE
• Read each question carefully before you start your answer.




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, 2
BLANK PAGE




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1 (a) Fig. 1.1 shows two cubes that represent a large and a small multicellular plant.

Fig. 1.1

Large multicellular Small multicellular
plant plant




Length = 2 cm Surface area : volume
Width = 2 cm = 6:1
Depth = 2 cm


(i) Using the data provided in Fig. 1.1, calculate the surface area : volume of the large
multicellular plant.




Surface area : volume = .......................................................... [2]

(ii) Explain why a large multicellular plant needs a transport system but a small multicellular
plant does not.

...........................................................................................................................................

...........................................................................................................................................

...........................................................................................................................................

...........................................................................................................................................

...................................................................................................................................... [2]




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