The chloroplast contains bands composed of a variable number of the photosynthetic thylakoids which are not organised into grana-like structures.
thats my answer
nucleus because nucleus is the answer
Chlamydomonas is used as a model organism for molecular biology, especially studies of flagellar motility and chloroplast dynamics, biogeneses, and genetics. One of the many striking features of Chlamydomonas is that it contains ion channels (channelrhodopsins) that are directly activated by light.
C. Nucleus, and I am sure of it.