In angiosperms,the embryo is developed at . . . . . . of the embryo sac.

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

Examine the figure given below and select the right option identifying all the four parts $a, b, c$ and $d$.

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 hollow foliar structure that encloses the shoot apex and a few leaf primordia is called ....

When the inner half of the oospore after the first division develops into an embryo and the outer half develops into a suspensor,this type of development is called: