Monoembryony is the emergence of one and only one seedling from a

seed In botany, a seed is a plant structure containing an embryo and stored nutrients in a protective coat called a ''testa''. More generally, the term "seed" means anything that can be Sowing, sown, which may include seed and husk or tuber. Seeds ...

. A seed giving two or more seedlings is polyembryonic. Some of the nuclear cells surrounding the

embryo sac In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells. It consists of three parts: the ''integument'', forming its outer layer, the ''nucellus'' (or remnant of the megasporangium), and the fe ...

start dividing and protrude into the embryo sac and develop into embryos. American Journal of Botany 98(10): 1613–1622. 2011. https://bsapubs.onlinelibrary.wiley.com/doi/epdf/10.3732/ajb.1100022

References

Plant reproduction Embryology {{developmental-biology-stub