What is stroma in a plant cell? State its function and location in a plant cell.

Stroma is a crucial component found within plant cells, particularly in chloroplasts. It is a gel-like substance that fills the inner space of the chloroplasts, surrounding the thylakoid membranes.

Function of Stroma

The stroma plays several important roles:

• Site of Photosynthesis: It is where the Calvin cycle occurs, converting carbon dioxide into glucose using energy from ATP and NADPH.
• Storage: Stroma contains enzymes, starch granules, and other substances necessary for metabolic processes.
• Support: It helps maintain the structure of the chloroplast and provides a medium for chemical reactions.

Location in a Plant Cell

Stroma is located inside the chloroplasts, which are found in the cytoplasm of plant cells. Chloroplasts are primarily present in the cells of green tissues, such as leaves, where photosynthesis takes place.