How do desert plant save water?

The animals get the water from the plants by drinking the water the plants have stored in them..

a catus holds water the most

The most commonly known plant would have to be the cactus. Because of the harsh desert terrain and the lack of rain a cactus can retain large amounts of water and requires very little. It is the...

you can use irrigation

Yes, because water is not going to affect the growth in a plant