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Define about manoxylic and pycnoxylic wo...

Define about manoxylic and pycnoxylic wood in Gymnosperms?

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In secondary xylem of Cycas stem the pith is narrow than cortex and with ray parenchyma. This type of wood is called manoxylic wood. In conifer the secondary xylem is well developed with narrow ray -parenchyma. Such type of wood is called pycnoxylic wood.
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