| Date | May 2016 | Marks available | 1 | Reference code | 16M.1.SL.TZ0.25 |
| Level | Standard level | Paper | Paper 1 | Time zone | TZ0 |
| Command term | Label | Question number | 25 | Adapted from | N/A |
Question
The diagram shows the layers of the tissues in a transverse section of the human small intestine.
Which is the layer labelled with the letter X?
A. Mucosa
B. Circular muscle
C. Epithelium
D. Longitudinal muscle
Markscheme
B
Examiners report
An image from an electronmicrograph would have been better. A layer seems to be missing, as the serosa is very small. The majority of candidates however gave the correct answer.
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