The secondary wood of Pinus is characterised | vedclass

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(B) $Pinus$ is a gymnosperm, and its wood is known as manoxylic or pycnoxylic wood. A characteristic feature of the secondary wood in $Pinus$ is the p

Vedclass · Accepted Answer

Presence of resin ducts

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(B) $Pinus$ is a gymnosperm, and its wood is known as manoxylic or pycnoxylic wood. A characteristic feature of the secondary wood in $Pinus$ is the presence of resin ducts. Resin ducts are specialized intercellular spaces lined by epithelial cells that secrete resin. These ducts are found in the roots, stems, and needles of $Pinus$ plants. Resin acts as an anticoagulant and protects the plant from freezing at temperatures as low as $-30^{\circ}C$.

The secondary wood of $Pinus$ is characterised by:

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