DENDROLOGY

Detailed explanation-1: -Abstract. 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-2: -Final answer: The stack of thylakoids of chloroplast is called a granum.

Detailed explanation-3: -Each granum is made up of a stack of closed compartment called thylakoids.

Detailed explanation-4: -Granum is a basic structural unit of the thylakoid membrane network of plant chloroplasts. It is composed of multiple flattened membranes forming a stacked arrangement of a cylindrical shape.

Detailed explanation-5: -Each stack of thylakoids is called a granum (plural = grana). The fluid enclosed by the inner membrane and surrounding the grana is called the stroma.