An embryo developing from a cell of the embryo sac other than the egg cell is an example of:

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

The condition where more than four spores are produced from a spore mother cell is known as:

Apomixis in plants means the development of a plant:

What is Apomixis? Give its importance.

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.