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root anatomy of dicots and monocots (prt 2)
terms for exam three
Terms in this set (15)
a single layer of potentially meristematic parenchyma cells that lie directly against the inner boundary of the endodermis
lateral, vascular, cork
pericycle give rise to __ roots and roots with secondary growth gives rise to __ cambium and __ cambium.
xylem arms are not well defined and primary xylem surrounds central pith
primary xylem occupies the center and it consists of four arms which touches the pericycle
in seed plants __ roots develop only in __, and do push through endodermis, cortex and epidermis
lateral roots may develop __ the ends of xylem arms
lateral roots may develop opposite the strands of __ phloem.
lateral roots may develop between the ends of __ arms and the adjacent strands of __ phloem (only in seed plants)
in both monocot and dictot roots __ phloem froms between xylem arms
in __ __the vascular cambium develops from the pericycle and follows starlike outline of primary xylem
cork cambium, phellogen
in woody dicot plants, __ __ or __ is formed in the pericycle and gives rise to phellem, and phelloderm
forms inside the endodermis and replaces the endodermis, cortex and epidermis in dicot roots
pericycle niether forms vascular cambium or cork cambium, hence there is no secondary growth in this root.
growth stops after the plant reached certain size or leaf or flower fully expanded
new tissues are added indefinitely season after season.
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