FORESTRY
PLANT AND WOOD ANATOMY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
older, non-functioning xylem in trees
|
|
sapwood
|
|
|
summer wood
|
|
|
spring wood
|
|
|
heartwood
|
Explanation:
Detailed explanation-1: -Heart wood is non-functional wood due to tylose formation and deposition of secondary metabolites such as tanin, resin, gums and other oils. Heartwood is very dark as compared to the sapwood.
Detailed explanation-2: -heartwood, also called duramen, dead, central wood of trees. Its cells usually contain tannins or other substances that make it dark in colour and sometimes aromatic. Heartwood is mechanically strong, resistant to decay, and less easily penetrated by wood-preservative chemicals than other types of wood.
There is 1 question to complete.