Assertion: aquatic plant's root | /r/AtLocation | the substrate
Facets:
value: without any root system
type: OTHER
Source sentences:
text: Plants with leaves above the waterline, with roots attached to the substrate
text: Submerged macrophytes completely grow under water with roots attached to the substrate or without any root system.
text: Submerged macrophytes completely grow under water with roots attached to the substrate (e.g. Myriophyllum spicatum) or without any root system (e.g. Ceratophyllum demersum).