Assertion: cell wall's layer | /r/HasProperty | tough
Facets:
value: very
type: DEGREE
Source sentences:
text: Layers of chitin are very tough; chitin is the same molecule found in the rigid exoskeletons of animals such as insects and crustaceans.
text: The cell wall is a tough layer found on the outside of the plant cell that gives it strength and also maintains high turgidity.
text: The cell wall is a tough layer, which may be rigid or flexible depending on the type, and surrounds the entire cell.
text: The cell wall is a tough layer, which may be rigid or flexible depending on the type, and surrounds the entire cell.