Question
Draw the labeled diagram of typical anatropus ovule.
✓
Answer
→ An ovule is a female megasporangium where the formation of megaspores takes place.
→ The various parts of an ovule are -
→ Funicle - It is a stalk-like structure which represents the point of attachment of the ovule to the placenta of the ovary.
→ Hilum - It is the point where the body of the ovule is attached to the funiculus.
→ Integuments - They are the outer layers surrounding the ovule that provide protection to the developing embryo.
→ Micropyle - It is a narrow pore formed by the projection of integuments. It marks the point where the pollen tube enters the ovule at the time of fertilization.
→ Nucellus - It is a mass of the parenchymatous tissue surrounded by the integuments from the outside. The nucellus provides nutrition to the developing embryo. The embryo sac is located inside the nucellus.
→ Chalazal - It is the basal part of the ovule in plants, where nucellus and integuments join.
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