Question

Label A, B, and C respectively.

• A. Lumen, granum, and stroma
• B. Granum, stroma, and lumen
• C. Stroma, granum, and lumen
• D. Stroma, lumen, and granum

Answer 1

The correct option is C Stroma, granum, and lumen

The given diagram is the structure of a chloroplast. It is a double membranous structure. The aqueous fluid enclosed by the inner membrane of the chloroplast is called the stroma. It is the site of the dark reaction of photosynthesis. Disc-shaped structures called thylakoids are stacked above one another to form the granum and are present in the stroma. Each granum is interconnected by the stroma lamella. The space enclosed by the thylakoid membrane is called the lumen. Photophosphorylation takes place inside the lumen of thylakoids.