2023 OCR A LEVEL BIOLOGY A QUESTION PAPER 3 [H420/03: Unified biology]
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2023 OCR A LEVEL BIOLOGY A QUESTION PAPER 3 [H420/03]
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2023 OCR A LEVEL BIOLOGY A QUESTION PAPER 3 [H420/03: Unified biology]   


1 Cats are mammals.
(a) A light micrograph of a section through the trachea of a cat is shown in Fig. 1.1.
 Fig. 1.1
 
A
B
C
 (i) Name the tissues labelled A and B in Fig. 1.1.
A ........................................................................................................................................
B ........................................................................................................................................
[2]
 (ii) Name the two types of cell in the box labelled C in Fig. 1.1 and outline their functions.
1 Name ..........................................................................................................................
Function .....................................................................................................................
2 Name .........................................................................................................................
Function .....................................................................................................................


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