Explain the structure of chloroplast with a neatly label sketch. (AS1)

Chloroplast is a powerhouse for the synthesis of carbohydrates in plants. It is broadly divided into three parts (Fig 3) namely:

a) Membrane: Chloroplast is double walled organelle viz. it contains inner and outer membrane.

b) Stroma corresponds to the cytoplasm of chloroplast. It also serves as site for dark reaction of photosynthesis to take place.

c) Thylakoids/ Granum: Thylakoids contains chlorophyll that absorbs light. Stacks of thylakoids are known as granum.

Fig 3 shows different parts of chloroplast