AP BIOLOGY

Detailed explanation-1: -Stroma is the fluid filling up the inner space of the chloroplasts which encircle the grana and the thylakoids. In addition to providing support to the pigment thylakoids, the stroma are now known to contain chloroplast DNA, starch and ribosomes along with enzymes needed for Calvin cycle.

Detailed explanation-2: -The grana and stroma are present inside the cell organelle chloroplast. It is a type of plastid.

Detailed explanation-3: -The stroma is located in the chloroplast of a plant cell. The chloroplast is a membrane bound organelle which is found in the cytoplasm of a plant cell. Inside chloplasts there exists a fluid called the stroma which surrounds the thylakoid membranes which contain the chlorophyll which is used to capture light.

Detailed explanation-4: -The inner membrane surrounds a large space called the stroma, which is analogous to the mitochondrial matrix and contains many metabolic enzymes. Like the mitochondrion, the chloroplast has its own genome and genetic system. The stroma therefore also contains a special set of ribosomes, RNAs, and the chloroplast DNA.

Detailed explanation-5: -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).