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plant availability to water - Coggle Diagram
plant availability to water
Xerophytes
Ways of conserving water (adaptations)
hairy leaves - trap a layer of humid air to reduce water loss
curled leaves - greatly reduces water loss by transpiration
reduced leaves - reduces water loss
Succulents - store water in specialised sacs
reduced number of stomata - reduces loss of water from the stomata
leaf loss - prevents water loss by simple diffusion
sunken stomata - reduces air movement around the stomata
root adaptations - long deep roots to get maximum water uptake
thick waxy cuticle - minimises water loss
habitats with very little water
water will evaporate off of the leaves surface
hot, dry and breezy
Hydrophytes
hydrophyte adaptations
wide, flat leaves - capture maximum light
small roots - water can get directly into the stem so there is not much need for roots
reduced structure - water supports the plant
large surface areas - maximum area for photosynthesis
many always open stomata on the upper surface - maximises gaseous exchange and the loss of water
air sacs - enables floating
very thin or no waxy cuticle - allows loss of water
aerenchyma - air spaces making the leaves and stems more buoyant
plants that live in water
need special adaptations to live and grow in water
it is important for leaves to float so they can get light to perform photosynthesis
the air spaces in the plant need to be filled with air not water
some hydrophytes grow roots in the air to get air