FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a and b
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a and c
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b and c
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a b and c
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Detailed explanation-1: -Each year, the tree forms new cells, arranged in concentric circles called annual rings or annual growth rings. These annual rings show the amount of wood produced during one growing season.
Detailed explanation-2: -YES, growth rings are visible in woody roots and stems. These rings are referred to as annual rings. This type of ring can be seen as a result of alteration in the speed of the growth of trees in entire seasons. If one ring is present, it signifies that one year has passed in the tree’s lifecycle.
Detailed explanation-3: -The annual rings are formed by secondary xylem because the growth in spring and autumn seasons forms spring and autumn wood. The definition of wood is secondary xylem, reflected by the origin of the term ‘xylem’, the Greek word xylon, for wood.
Detailed explanation-4: -Tree rings form in the trunk of a tree from new cells generated in the cambium, the meristem (growing point) that lies just beneath the tree’s bark. In the early part of the growing season when the tree is emerging from dormancy and growing conditions are near perfect cells grow rapidly and are less dense.