Biology 9700 · AS & A Level · Movement into and out of cells

Movement into and out of cells — practice question

Which characteristic of some xerophytic leaves lowers the transpiration rate by reducing the water potential gradient between the leaf’s internal surface and the atmosphere?

  • Aa thick waxy cuticle on the upper surface of the leaf
  • Bleaves reduced to spines with a small surface area to volume ratio
  • Cstomata located in sunken pits on the leaf surface
  • Delongated leaves that are swollen storing large amounts of water

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