The suspensor in a developing embryo is formed from:

In angiosperms,during the development of the embryo,the suspensor cells develop from:

$A$: Eight cells of the octant stage in dicot embryogeny are formed by $2$ vertical and $1$ transverse division in the embryonal cell.
$R$: These cells are arranged in epibasal and hypobasal tiers.

The study of the formation,growth,and development of a new organism from an egg is known as:

In this diagram showing the $L$.$S$. of an embryo of grass,identify the answer having the correct combination of alphabets with the right part.

The correct sequence of developmental stages of embryo in angiosperms is . . . . . .