Assertion: meristem's cell | /r/HasAspect | thick cell wall
Facets:
value: on their external side
type: LOCATION
value: excessively
type: DEGREE
Source sentences:
text: Collenchyma cells are elongated and have a thick cell wall containing large amounts of pectins and water.
text: The epidermis is often made up of cells called collenchyma cells that have excessively thick cell walls on their external side.