Assertion: chloroplast's photosystem | /r/HasProperty | embedded in thylakoid
Facets:
Source sentences:
text: They contain chlorophyll , the green pigment necessary for photosynthesis to occur, and associated accessory pigments ( carotenes and xanthophylls) in photosystems embedded in membranous sacs, thylakoids (collectively a stack of thylakoids are a granum [plural = grana] ) floating in a fluid termed the stroma .