Assertion: leaf's tissue | /r/HasProperty | exterior
Facets:
value: to the xylem
type: LOCATION
value: to phloem
type: TRANSITIVE-OBJECT
value: immediately
type: MANNER
Source sentences:
text: In the root, the vascular system (also referred to as the vascular cylinder or stele) has as its outer boundary a single layer of pericycle tissue that is immediately exterior to the xylem and phloem.