NEET BIOLOGY

Detailed explanation-1: -hollow disks that are called thylakoids (“saclike”). The chloroplasts of most higher plants have regions, called grana, in which the thylakoids are very tightly stacked.

Detailed explanation-2: -Photosynthesis takes place inside the chloroplasts that sit in the mesophyll of the leaves. The thylakoids sit inside the chloroplast and they contain chlorophyll which absorbs the different colours of the light spectrum to create energy (Source: Biology: LibreTexts).

Detailed explanation-3: -The correct option is C thylakoids, stroma. The interiors of chloroplasts contain closely packed flattened sacs called thylakoids which are arranged in piles which lie in a colourless substance called 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: -The thylakoid membranes of a chloroplast is an internal system of interconnected membranes, that carry out the light reactions of photosynthesis. They are arranged into stacked and unstacked regions called grana and stroma thylakoids, respectively, that are differentially enriched in photosystem I and II complexes.