Apomixis and Polyembryony

Embryo sacs of some apomictic species appear normal but contain diploid cells. Suggest a suitable explanation for the condition.

 Are parthenocarpy and apomixis different phenomena? Discuss their benefits.

What is polyembryony and how can it be commercially exploited?

Are pollination and fertilisation necessary in apomixis? Give reasons.

Can an unfertilised, apomictic embryo sac give rise to a diploid embryo? If yes, then how?

In the case of polyembryony, if an embryo develops from the synergid and another from the nucellus, which is haploid and which is diploid? 

The phenomenon observed in some plants wherein parts of the sexual apparatus is used for forming embryos without fertilisation is called