adaptations of xerophytes

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8 Terms

1
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what is a xerophyte?

a plant that is adapted to conserve water effectively because it lives in very dry conditions

2
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what are the adaptations of xerophytes?

thick cuticle, waxy cuticle, hairs, rolled leaves, sunken stomata, spines, less stomata

3
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how does a thick cuticle help conserve water?

  • impermeable to water

  • increase diffusion distance

4
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how does a waxy cuticle help conserve water?

it reduces evaporation/transpiration

5
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how do hairs on leaves help conserve water?

traps water vapour so decreases the water potential gradient

6
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how does having rolled leaves help conserve water?

  • trap water vapour so the water potential gradient decreases

  • reduce exposure of stomata to air so less evaporation occurrs

7
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how does having sunken stomata help conserve water?

they trap water vapour so the water potential gradient decreases

8
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how does having spines help conserve water?

reduces SA:V so decreases rate of evaporation