(I) The filiform apparatus helps in absorption of food.
(II)Antipodals are the vegetative cells of female gametophyte
(III)The fusion of two polar nuclei occurs always before the entry of pollen tube.
(IV) The largest cell of embryosac is the egg cell.
$\begin {array} {1 1} (1)\;(I),(II) & \quad (2)\;(II),(III) \\ (3)\;(I),(IV) & \quad (4)\;(III),(IV) \end {array}$
