Briefly explain the function of at least 4 parts of a tree trunk
-
Bark
- Protect the inner tree against:
- Extreme temperature changes
- Insects, fungi and animal attack
- Moisture evaporation from the tree
-
Cambium layer
Develops cells that form bark, promotes tree growth
-
Heartwood
Storage for waste products, provides support for the tree
-
Sap wood
conveys water and mineral salts from the roots to the leaves.
