Give differences: Male gametophytic stage and Female gametophytic stage.

In angiosperms,microsporogenesis and megasporogenesis:

Which of the following statements is true regarding $Strobilanthus \; kunthiana$ (Neelakuranji)?

What is a $Pollen-embryo$?

Read the following statements regarding gynoecium in angiosperms.
$i$. Embryo sac is located towards the micropylar end of the ovule.
$ii$. Placenta is present inside the ovary locules.
$iii$. Stigma serves as the receptive organ for pollen grains.
$iv$. Cells of the nucellus are haploid with abundant food.
$v$. Ovules generally have more haploid cells than diploid cells.
Identify the correct set of statements from the following.

Even in the absence of pollinating agents,seed setting is assured in