Select the incorrect statement.

Nitsch was able to obtain strawberries of curious shapes by:

Arrange the following terms in the correct developmental sequence: Pollen grain, sporogenous tissue, microspore tetrad, pollen mother cell, male gametes.

Choose the correct option from the following statements.
$I$. During embryogenesis,the zygote undergoes mitotic cell division.
$II$. In organisms with a diplontic life cycle,the zygote divides by meiotic cell division.
$III$. The pericarp (fruit wall) develops from the ovary wall after fertilization.
$IV$. In brinjal,sepals remain attached to the fruit even after fertilization.

Give the ploidy of the following structures in angiospermic plants: Zygote,Endosperm,and Ovum.

$A.$ In roses,the endosperm is formed after fertilization.
$R.$ Double fertilization is observed in angiosperms.