The leaf is a flat organ composed of
two layers of photosynthetic cells sand-
wiched between the epidermal, or outer,
layers. the epidermal layers are coated
with a waxy covering called the cuticle,
which prevents the loss of gas and water.
tiny holes, called stomata, provide open-
ings for the entry of carbon dioxide and
the exit of oxygen.
2. based on the information above,
the leaf "breathes" through its
(1) photosynthetic cells
(2) veins
(3) cuticle
(4) epidermal layers
(5) stomata