Can we say that grana contain chlorophyll?
A grana is the plural of granum. A granum is a stack of thylakoids found in chloroplasts--they look like stacks of pancakes (thylakoids). Grana is multiple stacks of thylakoids found in chloroplasts in the cell. The light reaction of photosynthesis takes place in the thylakoids stacked in grana because of presence of chlorophyll into it. So, yes we can say that grana contain chlorophyll.