NEET BIOLOGY

Detailed explanation-1: -Inside of the inner membrane, the chloroplast has a jelly-like matrix, much like the cytosol of the cell, called the stroma. The stroma surrounds a series of folded membrane-bound structures, thylakoids, that resemble pancakes and are stacked (again, much like pancakes) into columns called grana (granum, singular).

Detailed explanation-2: -Stroma is the fluid-filled internal space of the chloroplasts which encircle the grana and the thylakoids. It contains chloroplast DNA, starch and ribosomes along with enzymes needed for the Calvin cycle.

Detailed explanation-3: -The thylakoids are interconnected and are layered on top of one another to form the stacks of grana. Each chloroplast may contain hundreds or more grana. The thylakoids are surrounded by a gel like material called the stroma.

Detailed explanation-4: -the thylakoid membrane, embedded in the stroma, encloses the aqueous lumen, which is the innermost compartment of the chloroplast.

Detailed explanation-5: -role in photosynthesis …the chloroplast is called the stroma.