An animal can wound a tree by scratching away the bark.. The tree can respond to the wounded many ways. Usually sapped quickly covers the wound, and then the tree covers the wound with new growth.
The diagram below shows a cross-section of the tree with a healed wound. What process works most directly with the transport system to heal the wound.
a. cellular reproduction
b. photosynthesis
c. water intake
d. carbohydrate system
