Xerophytic plants Flashcards

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1
Q

what is a xerophytic plants

A

plants that have adapted to limit water loss through transpiration, they have different ways to reduce transpiration

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2
Q

what are some of the modifications these plants have

A

Thick cuticle - the thicker the cuticle, the less water can leave.
Rolling up of leaves - this protects the lower epidermis where the stomata are and this area becomes saturated with water vapour and there is no water potential gradient.
hairy leaves - traps moist air next to leaf surface, the water potential is reduced

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3
Q

what is the problem xerophytic plants face

A

efficient gas exchange requires a thin, permeable surface with a large area. these features can lead to considerable loss of water by evaporation.

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