Assertion: brown algae | /r/HasAspect | holdfast
Facets:
value: relatively
type: DEGREE
Source sentences:
text: Some brown algae have relatively complex, differentiated tissues, including a holdfast that secures the organism to its substrate, air bladders to aid with buoyancy, a supporting stalk or stipe, wide blades that provide the major surface for nutrient exchange and photosynthesis, and spore-producing, reproductive tissues.