Nutrition in Plants Notes

• 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

• It is obtained from the atmosphere through small openings called stomata (singular: stoma) in the underside of the leaves.

• Each stoma is bounded by two half-moon-shaped guard cells.

The guard cells regulate the opening and closing of the stoma