What is Bark?

Bark is the thick extrastelar outer covering.
It consists of periderm and secondary phloem. So it consists of all living and dead cells outside vascular cambium. (primary and secondary phloem, phelloderm, phellogen and phellum).
The cork part of the bark in commercially important.
-Used in making of bottle cork, shock absorbers, sports goods etc.
Bark is formed associated with secondary thickening
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