FORESTRY
PLANT AND WOOD ANATOMY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
cambium
|
|
|
pith
|
|
|
bark
|
|
|
heartwood
|
Detailed explanation-1: -The rhytidome is the most familiar part of bark, being the outer layer that covers the trunks of trees. It is composed mostly of dead cells and is produced by the formation of multiple layers of suberized periderm, cortical and phloem tissue. The rhytidome is especially well developed in older stems and roots of trees.
Detailed explanation-2: -The inner bark, or “phloem”, is pipeline through which food is passed to the rest of the tree. It lives for only a short time, then dies and turns to cork to become part of the protective outer bark. The cambium cell layer is the growing part of the trunk.
Detailed explanation-3: -Each layer consists of two colors of wood. The light-colored ring is the “springwood” that grows in the spring. The dark-colored ring is the “summerwood” that grows in the summer. Tree rings vary in width each year depending on the environmental conditions.