Give differences: Heartwood and Sapwood

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Heartwood Sapwood
 $(1)$ In old trees where secondary growth takes place in sufficient amount,such that region is called Heartwood. 

 $(1)$The outer region of secondary wood that possesses young xylem cells, such that region is called sapwood. 

  $(2)$Its cells are filled with Tanin, Resin and other substances.   $(2)$It has living cells, tubes and fibres.
 $(3)$ It is durable and has black colour.   $(3)$It is soft and of yellow colour.
  $(4)$it gives mechanical  stength.  $(4)$It does physiological processes of plant.
 $(5)$ It loses the property of water transport.   $(5)$it transport water and nutrients and stores food.

 

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