- The symplast is made up of radial and axial
parenchyma cells. The radial run
perpendicular in the trunk. The axial are singles and the radials are in
bundles. The radials form the wood rays and phloem rays. Sapwood has an
interconnected network of living axial and radial parenchyma.
More info with diagram ...
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(See TREE ANATOMY, SHIGO, 1994)
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