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During secondary growth, amount of (a)...

During secondary growth, amount of
(a) Heartwood increases
(b) Sapwood increases
(c) Sapwood decreases
(d) Sapwood remains almost constant
(1) Only (d)
(2) (a) and (b)
(3) (a) and (c)
(4) (a) and (d)

A

Only (d)

B

(a) and (b)

C

(a) and (c)

D

(a) and (d)

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