Select the appropriate option for Apomixis.

Select the appropriate option regarding seeds produced through apomixis.

In citrus,adventive embryony is caused by which of the following?

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.

The formation of an embryo without the fusion of gametes is termed as:

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