Solution: An ovule is a female megasporangium from where megaspores formation takes place.
The various parts of an ovule are –
1) Funicle – It is a stalk-like structure that serves as the point of attachment of the ovule to the placenta of the ovary.
2) Hilum – It is the point of attachment between the body of the ovule and the funicle.
3) Integuments -It is divided into two parts outer and inner layers surrounding the ovule that provide protection to the developing embryo.
4) Micropyle-It is a narrow pore formed by the projection of integuments. It marks the path where the pollen tube enters the ovule during the fertilization process.
5) Nucellus- The central mass which is made up of parenchymatous tissue surrounded by the integuments from the outside. The nucellus provides nutrition to the developing embryo and holds the embryo sac in it.
6) Chalazal – It is the based swollen part of the nucellus from where the integuments originate.