FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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center
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outside
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Either A or B
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None of the above
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Detailed explanation-1: -The oldest layer of growth is in the center, and the newest growth rings are closest to the bark. Counting the rings can give you an estimate of how old the tree is.
Detailed explanation-2: -A: The outer bark is the tree’s protection from the outside world. Continually renewed from within, it helps keep out moisture in the rain, and prevents the tree from losing moisture when the air is dry. It insulates against cold and heat and wards off insect enemies.
Detailed explanation-3: -Heartwood is the central, supporting pillar of the tree. Although dead, it will not decay or lose strength while the outer layers are intact. A composite of hollow, needlelike cellulose fibers bound together by a chemical glue called lignin, it is in many ways as strong as steel.