Question

Which type of polyembryony involves diploid cells of the nucellus or integuments developing directly into embryos?

Options

• Cleavage Polyembryony

• Adventive (Nucellar) Polyembryony

• True Polyembryony

• Multiple Embryo Sac Formation

Answer 1

Adventive (Nucellar) polyembryony involves diploid cells of the nucellus or integuments (sporophytic tissue) developing directly into embryos, bypassing fertilisation. This mechanism is also known as nucellar embryony. Examples include Citrus, Opuntia, and Mango, where the nucellar embryos often outcompete the zygotic embryo.