Assertion: stoma | /r/HasProperty | tiny pore
Facets:
value: in plants
type: LOCATION
value: in the surface of a leaf
type: LOCATION
Source sentences:
text: In plants, a stoma is a tiny pore in the surface of a leaf that is used for gas exchange.
text: Each stoma (the tiny pore or hole) is flanked by two guard cells which expand and contract, closing and opening the stoma.