Select the correct option regarding the ploidy level of different structures of an angiospermous ovule.

Options

A. `{:("Nucellus",MMC,"Functional megaspore"),(n,2n,2n):}`
B. `{:("Nucellus",MMC,"Functional megaspore"),(2n,n,n):}`
C. `{:("Nucellus",MMC,"Functional megaspore"),(2n,2n,n):}`
D. `{:("Nucellus",MMC,"Functional megaspore"),(n,2n,n):}`

Answer

C

Explanation

The body of the ovule consists of a mass of parenchymatous cells named nucellus. It is equivalent to magasporangium `(2n)`. Megaspore mother cell or megasporocyte is a diploid `(2n)` cell which undergoes meiosis to form a linear tetrad of four haploid megaspores `(n)`. Normally, the chalazal megaspore is the functional megaspores while the other three degenerate.