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

Given below are two statements regarding Apomixis.
Statement $I$: Apogamy is a type of apomixis in which a gametophytic cell produces an embryo-like structure without fertilization.
Statement $II$: Apospory is a process where a diploid sporophyte cell produces a diploid gametophyte without undergoing meiosis.
In light of the above statements,select the correct answer from the options given below.

Nucellar embryo is

When a vegetative cell of the zygote forms an embryo,it is called:

In $Citrus$,adventive polyembryony arises due to the development of embryos from:

What is the formation of a gametophyte directly from a sporophyte called?