Plant Anatomy Archive

Sclerides

Sclereids typically are short cells with thick secondary walls, strongly lignified, and provided with numerous simple pits. Some sclereids have relatively thin secondary walls, however, and may be difficult to distinguish from sclerified parenchyma cells. The thick-walled forms, on the other hand, may strongly …

Fibers

Fibers typically are long, spindle-shaped cells, with more or less thick secondary walls, and they usually occur in strands. Such strands constitute the “fibers” of commerce. The process of retting (technical form of the word rotting) used in the extraction of fibers from the plant …

Sclerenchyma

The term sclerenchyma refers to a tissue composed of cells with secondary walls, often lignifi ed, whose principal function is mechanical or support. These cells are supposed to enable plant organs to withstand various strains, such as may result from stretching, bending, weight, and pressure …

Parenchyma

The term parenchyma refers to a tissue composed of living cells variable in their morphology and physiology, but generally having thin walls and a polyhedral shape, and concerned with vegetative activities of the plant. The individual cells of such a tissue are parenchyma cells. …