The desert is full of beautiful plants and animal life but it hides the fact that some of them are hostile
Like what for example?
The amount of biodiversity is amazing and a good example would be the flowering cactus,  which may look nice but will protects itself with its thorns  
I really like cacti plants.
They are amazing and there are about 1750 known species of them.
Do they all flower?
Yes and many do because of their adaptations to conserve water
Do they all have the capacity to go for long periods with little water?