What are the adaptations of a leaf??

They are adapted to prevent water loss by...

• Having small leaves to reduce the surface area so less water can be lost by transpiration
• Densly packed spongy mesophyll so less water evaporates into the air spaces
• Thick waxy cuticle
• Closing the stomata when there is not much water available
• Hairs on the surface of the leaf trap water vapour increasing the water vapour potential so less water diffuses out.
• Rolling the leaves and the presence of pits have the same effect as hairs

I don't know if you'll be asked about adaptations for other purposes but these were the ones i needed to learn for my exam. Hope this helps :)