Choose the correct labelling combination for the below-given diagram of Chloroplast.
Granum Stroma
Two membranes contain and protect the inner parts of the chloroplast. They are appropriately named the outer and inner membranes. The inner membrane surrounds the stroma and the grana (stacks of thylakoids). One thylakoid stack is called a granum.
1=Outer membrane., 2= Inner membrane., 3= Grana. ,4= Thylakoids ., 5= Stroma