As a tree grows older, which increases rapidly in thickness

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6.Anatomy of Flowering Plants

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As a tree grows older, which increases rapidly in thickness

A

Its heart wood

B

Its cortex

C

Its sap wood

D

Its phloem

Solution

(a) Heartwood $(duramen)$ is a hard and dark wood which are physiologically inactive $(almost\ dead).$

Standard 11

Biology

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