What is depicted by "$X$" and "$Y$" in the following diagram?

Match the embryonal cell in Column-$I$ with their origin given in Column-$II$ and choose the correct options given below.

Column-$I$	Column-$II$
$a$. Suspensor initial	$i$. Large basal cell of the $2$-celled pro-embryo
$b$. Embryonal initial	$ii$. First cell of the suspensor towards micropylar end
$c$. Haustorium	$iii$. Lowermost cell of the suspensor
$d$. Hypophysis	$iv$. Small terminal cell of $2$-celled pro-embryo

The diagram below shows a fertilised ovule and carpel. Which numbers represent the structures which will become:
$(i)$ The future embryo
$(ii)$ The future testa
$(iii)$ The future micropyle of the seeds
$(i), (ii), (iii)$ respectively?

In $Capsella$,the suspensor develops from the.....

The scutellum is a ......... .

The scutellum observed in the grains of maize or wheat can be compared to which part of the seed in other monocotyledonous plants?