Which of the following is an incorrect difference between sapwood and heartwood?
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a
Sapwood - Forms the peripheral major portion.Heartwood - Forms the central major portion.
b
Sapwood - Lighter in colourHeartwood -Darker in colour.
c
Sapwood - Less durable and susceptible to attack of microorganisms and insects.Heartwood - More durable,and resistant to attack of pathogens.
d
Sapwood - Physiologically inactive and cannot conduct water.Heartwood - Physiologically active and involved in the conduction of water.
answer is D.
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Detailed Solution
Sapwood is physiologically more active and conducts mineral water. Heartwood is physiologically inactive and does not conduct water due to the formation of tyloses but has commercial value.