AP BIOLOGY

Detailed explanation-1: -These are replaced by the periderm in the plants which exhibit secondary growth. The periderm is produced by the cork cambium. It comprises the phelloderm, cork, and cork cambium cells. The phellem or the cork forms the exterior of the cork cambium.

Detailed explanation-2: -As growth proceeds, the cork cambium forms in living cells of the epidermis, cortex, or, in some plants, phloem and produces a secondary protective tissue, the periderm. The cork cambium is, like the vascular cambium, a lateral meristem that produces cells internally and externally by tangential divisions.

Detailed explanation-3: -The outer bark, or periderm, are the tissues derived from the cork cambium itself. Morphologically, bark may refer to the outermost protective tissues of the stems or roots of a plant with some sort of secondary growth, whether derived from a true cork cambium or not.

Detailed explanation-4: -The cork cambium produces the cork and the secondary cortex. The vascular cambium produces secondary xylem and secondary phloem. Cork cambium develops from the secondary lateral meristem.