Formation of fruit without fertilization - $P$
Formation of seed without fertilization - $Q$
What are $P$ and $Q$?
$\quad\quad P\quad\quad \quad Q$

Apomixis is the development of

Apomictic embryos in $Citrus$ arise from

Despite a high level of heterozygosity,the progeny derived from the seed of a cross-pollinated plant was found to be completely uniform. One reason for this may be the phenomenon of:

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.

The development of an embryo from an egg without fertilization is called........