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Why have leaves adapted to have a waxy/glossy surface?

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    GCSE geography.
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    To prevent water loss as the waxy layer is waterproof.
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    On the one hand, it helps to prevent water loss through any gaps in a leaves out layer. On the other, it also allows transpiration to take place without without causing the leaf fibres to become saturated and soggy with water. The water lost via transpiration can't soak straight back in to the leave's outer-fibres once it's left the stomata, and so any water vapour hanging around is blown away or evaporated off the leave's surface if it builds up there as water.
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    Reduce water loss i think
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    (Original post by multiplexing-gamer)
    GCSE geography.
    The cuticle, that is the 'waxy layer', lessens water loss by not letting it diffuse away so easily (the cuticle is waterproof).
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    To prevent water loss by evaporation.
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    Reduce water loss (transpiration)

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Updated: April 23, 2011
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