AP BIOLOGY

Detailed explanation-1: -Thylakoids-Floating in the stroma is a collection of sacks containing chlorophyll called the thylakoids.

Detailed explanation-2: -The green pigment chlorophyll is located within the thylakoid membrane, and the space between the thylakoid and the chloroplast membranes is called the stroma (Figure 3, Figure 4).

Detailed explanation-3: -Stacks of thylakoids embedded with pigment molecules are called grana. The inner matrix of the chloroplast is called the stroma.

Detailed explanation-4: -(ˈaɪləˌkɔɪd ) noun. a disk-shaped, membranous sac containing chlorophyll, in which the light reaction of photosynthesis occurs, found in blue-green algae and in the chloroplasts of green plants.

Detailed explanation-5: -The chloroplast is involved in both stages of photosynthesis. The light reaction takes place in the thylakoid discs.