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Xylem Phloem
 The xylem vessels form a  The food is transported to all the
continuous network of channels parts of the plant by phloem.
with roots, stem, leaves and
branches of the plant through
which water is transported.
 Movement of water and minerals is  Movement of food is bidirectional.
unidirectional (upward from root to
aerial parts)  Movement of food through phloem
 Movement of water and minerals is called translocation.
through xylem is called ascent of
sap.

TRANSPIRATION

Transpiration is the biological process by which water is lost in the form of water vapour
from the aerial parts of the plants.

Advantages of transpiration