Which statement is correct for apomixis?

Nuclear polyembryony is found in

Formation of gametophyte directly from spore mother cell without meiosis is called

In some plants,the female gamete develops into an embryo without fertilization. This phenomenon is known as:

The best example of polyembryony is

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.