With a neat, labelled diagram, describe the parts of a typical angiosperm ovule.
An ovule is a female megasporangium where the formation of megaspores takes place. (figure)
The various parts of an ovule are
Funiculus - 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 based swollen part of the nucellus from where the integuments originate.
Definations / Explanation :
$1.$ Micropyle
$2.$ Chalaza
What is the direction of micropyle in anatropous ovule
Perisperm is
Choose the odd one w.r.t. gynoecium.
Explain about Embryo sac.