Chlorophyll

• It is a green pigment and is usually present in the leaves in structures called chloroplasts.

• Plants appear green due to the presence of a substance called chlorophyll in the leaves.

Chlorophyll (microscopic view)

Internal structure of a chloroplast

Internal Structure of a Chloroplast:

Thylakoid:

• There are stacks of discs present inside each chloroplast. Each such disc is called a thylakoid.

Grana:

• The stacks of thylakoid are called grana.

Stroma:

• The grana are arranged in a fluid matrix called stroma.