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Question

Name the various kinds of cell layers which constitute the bark.

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Solution

Bark is formed as a result of secondary growth of cork cambium in the stem of dicots and gymnosperms.

Bark includes all the dead and living tissues outside the vascular cambium. It includes

(1) Cork (Phellem)

(2) Cork cambium (Phellogen)

(3) Phelloderm

(4) Cortex

(5) Phloem


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