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

In agamospermy,the embryo sac is diploid because it is formed without meiosis. Such an embryo sac may develop from:

Polyembryony is commonly observed in which of the following species?

Statement-$X$: Apomixis is seen in a few flowering plants such as some species of $Asteraceae$ and grasses.
Statement-$Y$: Apomixis is a form of asexual reproduction that mimics sexual reproduction.
Statement-$Z$: In some species of apomictic seeds,the diploid egg cell is formed without reduction division.

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.

$A$: Polyploids with an odd number of chromosomes are propagated vegetatively.
$R$: Seed formation is absent due to meiotic abnormality.