Stroma is the inner liquid of the chloroplast. It contains enzymes involved in the Calvin phase of the photosynthesis.

Chloroplast has a double membrane like the mitochondrion. The inner mambrane of the chloroplast has given rise to the tylakoids and membranes connecting them.

Carbohydrates produced in the process of photosynthesis are stored as starch granules.

基粒是紧密排列的膜盘，含有光合作用第一阶段所需要的酶。