Describe4 marksStandard
The table below lists four tissues found in the human gas exchange system. Describe the function of each tissue.
| Tissue | Function |
|---|---|
| (i) Cartilage | |
| (ii) Smooth muscle | |
| (iii) Elastic fibres | |
| (iv) Squamous epithelium |
CAIE A Level Biology 9700 · Gas exchange
Gas exchange: describe question
How this question is marked
4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.
Describe means: Say what happens or what something is like, in order and with detail. You are not being asked why. If there is data, quote it: name the trend, then give figures with units at the points where it changes.
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