Editing Tissue (biology) (section)

=====Collenchyma=====
[[File:Plant cell type collenchyma.png|thumb|Cross section of collenchyma cells]]

[[Collenchyma]] (Greek, 'Colla' means gum and 'enchyma' means infusion) is a living tissue of primary body like [[Parenchyma]]. Cells are thin-walled but possess thickening of [[cellulose]], water and [[pectin]] substances ([[Hydroxypropyl cellulose|pectocellulose]]) at the corners where a number of cells join. This tissue gives tensile strength to the plant and the cells are compactly arranged and have very little inter-cellular spaces. It occurs chiefly in [[hypodermis]] of stems and leaves. It is absent in [[monocots]] and in roots.

Collenchymatous tissue acts as a supporting tissue in stems of young plants. It provides mechanical support, elasticity, and tensile strength to the plant body. It helps in manufacturing sugar and storing it as starch. It is present in the margin of leaves and resists tearing effect of the wind.