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IMSO 2008 Science – Taiwan Selection First Round Theory Question 24

IMSO Science · IMSO 2008 Science – Taiwan Selection First Round Theory

Question 24

Stomata in the typical green leaves, _______ .
  1. are covered by a waxy cuticle
  2. control the opening of guard cells
  3. close when water is being lost at too great a rate
  4. are usually most abundant on the upper epidermis of a leaf