Anatomy of Phloem Cells

Studies on the origin and distribution of phloem should be reviewed.

Studies on the origin and distribution of phloem should be reviewed; Primary phloem; sieve elements secondary phloem; structure and components of secondary phloem; companion cells; phloem fibres and sieve; parenchyma cells; Periderm - meaning and occurrence; Phellogen and phelloderm; initiation of periderm; Activity of phellogen; distribution of lenticels; ultra structure of plant cell wall; the pit fields chemical aspect of cell wall lignin; cellulose; hemicellulose etc; principal uses of phloem cells