Question

With the help of a labelled diagram describe the structure of a chloroplast.

Answer 1

With the help of a labelled diagram describe the structure of a chloroplast.

• Chloroplast is the cell organelle present in the plant cells and green algae.
• The organelles contain a green pigment called chlorophyll which is involved in the photosynthesis of food.
• Each chloroplast is bounded by two unit membranes which show two distinct regions that are Grana and stroma.

Grana:

• Grana are stacks of membranous flattened discoid sacs called thylakoids which contain the molecules of chlorophyll.

Stroma:

• Stroma is the homogeneous matrix in which grana are embedded.