In given figure, labeled part $X$ is formed by....

$X$ - $MMC$ is a large cell containing dense cytoplasm and a prominent nucleus

$Y$ - Method of embryo sac formation from a single megaspore is termed monosporic

Synergids are which type ?

Embryo sac is also known as

In angiosperms, the following events occur during megasporogenesis and megagametogenesis

$(i)$ Differentiation of megaspore mother cells

$(ii)$ Meiosis of the megaspore mother cell

$(iii)$ Formation of a linear tetrad

$(iv)$ Mitotic division of the functional megaspore

$(v)$ Degeneration of 3 megaspores

$(vi)$ Formation of embryo sac

$(vii)$ Fusion of polar nuclei

The correct sequence is

In angiosperms, functional megaspore develops into