AP BIOLOGY

Detailed explanation-1: -In most higher plants, the thylakoids are arranged in tight stacks called grana (singular granum). Grana are connected by stromal lamellae, extensions that run from one granum, through the stroma, into a neighbouring granum. The thylakoid membrane envelops… …of flattened, disklike sacs called thylakoids.

Detailed explanation-2: -Chloroplasts contain a system of membrane sacs, the thylakoids, some of which are stacked to form grana (singular, granum), whereas others float freely in the stroma. It is on the thylakoid membranes that the electron carriers necessary for photosynthesis reside.

Detailed explanation-3: -Thylakoid is a disc-shaped structure within the stroma of the chloroplast. Stroma is the space inside the inner membrane of the chloroplast. Thylakoids are placed one above the other to form a stack-like structure called a granum.

Detailed explanation-4: -Thylakoids are interconnected disc-like sacs of the internal membrane system of the chloroplast. They are found suspended in the stroma. Thylakoids are arranged in a stack, which is called grana. The thylakoid membrane contains the photosynthetic pigment chlorophyll, which absorbs the sunlight during photosynthesis.

Detailed explanation-5: -Each granum is made up of a stack of closed compartment called thylakoids.