Answer:
storage of water and developmend of thorns
Explanation:
The cactus is the best example of a plant that has adapted very well to the desert.
The first adaptation has to do with water storage. Thanks to the long roots it has, it can absorve water from very deep areas. The water stored is stored in adapted vacuoles. The cells of the cactus are adapted to transpirate as little as possible, no to loose water in evatranspiration process.
The second adaptation has to do with it´s thorns. Big, rigid and pointy thorns are the perfect defense tolive in the dessert. Animals will tend to eat plants which will not harm them at all. This is why, thorns are a great protection against hungry eaters.