Does Parenchyma Have Lignin?

The cell wall of parenchyma cells and sieve cells is mainly a primary cell wall, which contains mainly cellulose. In contrast, the cell wall of fiber cells, epidermal cells, and vessel cells is composed of the primary cell wall and the secondary cell wall; the secondary cell wall mainly contains lignin.

Are parenchyma cells Lignified?

Parenchyma cells in plants provide mechanical support when they become lignified and thick‑walled.

Which tissue does not contain lignin?

Collenchyma tissue cell walls are thickened, when they become thick at the corners where cells are joined it is angular. Lamellar collenchyma is thickened at their tangential walls which are parallel with the surface. Hence, Lignin is absent in collenchyma.