As a tree grows older,which part increases ra | vedclass

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(A) As a tree grows older,secondary growth occurs due to the activity of the vascular cambium. This process produces secondary xylem towards the inner

Vedclass · Accepted Answer

Its heartwood

Vedclass · Answer

(A) As a tree grows older,secondary growth occurs due to the activity of the vascular cambium. This process produces secondary xylem towards the inner side. The older,central part of the secondary xylem becomes physiologically inactive,dark,and hard due to the deposition of tannins,resins,and oils,which is known as heartwood $(duramen)$. While heartwood provides mechanical support,the sapwood $(alburnum)$ is the peripheral,physiologically active part of the secondary xylem that conducts water and minerals. In older trees,the volume of heartwood increases significantly as more sapwood is converted into heartwood over time.

As a tree grows older,which part increases rapidly in thickness?

Similar Questions

Vascular cambium of dicot root is purely secondary in origin and arises from:

Identify the location and function of the following:
$(i)$ Fascicular cambium
$(ii)$ Pericycle

Explain the process of secondary growth in roots.

In which of the following is secondary growth typically observed?

$A$. Heartwood is durable,dark,and central in position.
$B$. Tyloses are balloon-like structures of xylem parenchyma in vessel lumen.
$C$. Late wood is formed during spring season.

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