Embryos develop directly from diploid cells of the nucellus in . . . . . . .

Choose the correct option from the following statements.
$I$. Apomixis is a form of asexual reproduction which mimics sexual reproduction.
$II$. In Apomixis,seeds develop either from a diploid egg cell or from cells of the nucellus.
$III$. Seeds collected from hybrid plants maintain hybrid characters for a longer time.
$IV$. In Apomixis,there is segregation of characters.

Pinus shows

Match the category of apomixis in Column-$I$ with its example in Column-$II$ and choose the correct option.

Column-$I$	Column-$II$
$i$. Diplospory	$a$. Mango
$ii$. Apospory	$b$. Nicotiana
$iii$. Adventive polyembryony	$c$. Taraxacum
$iv$. Non-recurrent apomixis	$d$. Citrus

The process in which a haploid embryo is formed from a haploid egg without fertilization is called:

In citrus,adventive embryony arises from which of the following?