xerophytes

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xerophytes

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.

Exaples:

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

other adaptations=

A thick cuticle

Rolling up of leaves

Hairy leaves

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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

Waterproof covering

spiracles

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