1. The ovule which has a bent axis and downwardly directed micropyle is called anatropous ovule. It is the most common type of ovule in angiosperms.
2. The matured anatropous ovule consists of two parts, viz., the stalk and the body. The stalk of the ovule is called the funicle or funiculus. The funicle attaches the ovule with the placenta.
3. The point at which the funicle is attached to the body of the ovule is called hilum.
4. Nucellus : It is made up of diploid parenchymatous cells. The basal part of the nucellus is called chalaza. The protective coverings of the nucellus are called integuments.
5. Micropyle : The integuments do not completely cover the nucellus. They leave a small opening called micropyle at the tip.
6. Embryo sac : In a mature ovule, the nucellus shows an oval-shaped structure towards its micropylar end called embryo sac or female gametophyte.
