Fig. 4.1 shows a light micrograph of a leaf section from the xerophytic plant Nerium oleander, with one of the plant’s stomata circled.
(a)[3]
List three adaptations that can be seen in Fig. 4.1 and are typical of xerophytic plants.
(b)[2]
Calculate the diameter of the vascular bundle along X-Y. Show your working and state the answer to the nearest $100\,\mu\text{m}$.
(c)[4]
Describe how transpiration occurs in plants such as N. oleander.
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