collenchyma

In its extended position, the cells of the entire collenchyma are distended with water.

Parts of the strings in celery are collenchyma.

Collenchyma tissue makes up things such as the resilient strands in stalks of celery.

Stretchable support (without elastic snap-back) is a good way to describe what collenchyma does.

Collenchyma (cells with thick primary walls that retain their protoplasm)

Collenchyma tissue is composed of elongated cells with irregularly thickened walls.

There are four main types of collenchyma:

Collenchyma cells are typically quite elongated, and may divide transversely to give a septate appearance.

Collenchyma cells are usually living, and have only a thick primary cell wall made up of cellulose and pectin.

Angular collenchyma (thickened at intercellular contact points)

The outer cortical cells often acquire irregularly thickened cell walls, and are called collenchyma cells.

Annular collenchyma (uniformly thickened cell walls)

Tangential collenchyma (cells arranged into ordered rows and thickened at the tangential face of the cell wall)

Collenchyma is Greek word where "Collen" means gum and "enchyma" means infusion.

The pulvinus is a motor structure consisting of a rod of sclerenchyma surrounded by collenchyma.

Both are embedded in a dense parenchyma tissue, called the pith or sheath, which usually includes some structural collenchyma tissue.

The walls of collenchyma in shaken plants (to mimic the effects of wind etc.), may be 40-100% thicker than those not shaken.

Collenchyma cells are most often found adjacent to outer growing tissues such as the vascular cambium and are known for increasing structural support and integrity.

Collenchyma cells - collenchyma cells are alive at maturity and have only a primary wall.

The plant cells which contain chloroplasts are usually parenchyma cells, though chloroplasts can also be found in collenchyma tissue.

Lacunar collenchyma (collenchyma with intercellular spaces)

Pectin and hemicellulose are the dominant constituents of collenchyma cell walls of dicotyledon angiosperms, which may contain as little as 20% of cellulose in Petasites.

A cortex consisting of Hypodermis (collenchyma cells) and Endodermis (starch containing cells)is present above the pericycle and vascular bundles.

Unlike the collenchyma, mature sclerenchyma is composed of dead cells with extremely thick cell walls (secondary walls) that make up to 90% of the whole cell volume.

Complaining about Link's excessive nomenclature, Schleiden (1839) stated mockingly that the term 'collenchyma' could have more easily been used to describe elongated subepidermal cells with unevenly thickened cells.