Is a plant that is adapted to live in conditions which there is either a no water in the soil or the atmosphere is to dry.
Desert cacti= have stems that can store lots of water have a large surface area so can collect more water.spines that lose water through transpiration. they also protect the cacti from animals eating them.Arctic plants= often grow close to the ground and have small leaves this helps to conserve water and to avoid damage by the strong cold wind
A thick cuticle
Rolling up of leaves
Limiting watr loss in insects
Most insects are terrestrial. the main problem = water easily evaporates from the surface of thier bodies and they become dehydrated.
Insects have evolved the following adaptations to reduce water loss=
small surface area to volume ratio