Plants that live in the desert have long roots so when it DOES rain they are able to gather a lot of it. They also have small leaves and some have spikes so that other animals can't steal their water.
Biomes.
we breath carbon out,which allows plants to live which allow us to breath oxygen.)
There are deciduous plants in the desert but no deciduous desert.
there are plants that can store water, but do not need much to survive, such as a cactus, they also don't have big leaves because that needs more water, and there is a lot of sun in the desert.
a spikey plant that ha a liquid inside to stay alive
By definition, in the desert
Yes, plants live in all but the most exteme of deserts such as the Antarctic where few plants live and are rare in the Atacama Desert.
An ecosystem is a place where plants and animals ( maybe humans ) live and animals and plants live in the desert so … 
Some of the plants that live in the Simpson Desert: Canegrass Acacia Parrot Bush Spinifex Grass
Armadillo lizard, Desert tortoise, camel, desert rat are the only animals that live in the desert.cactus, Soaptree Yucca, Mojave Aster are the only plants to live in the desert
Xerophytic plants live in the desert scrub.
Aphids can be found in any warm or hot desert which has plants upon which they feed.
Biomes.
Yes.
because they like it
There are many, many animals that eat plants and live in the desert. However, there are no deserts that eat plants.
Some rattlesnakes live in deserts but a few species live in grasslands and forests.