Which is NOT a common example of adventive polyembryony?

Adventive polyembryony is the formation of additional embryos from the diploid sporophytic cells of the ovule, such as the nucellus or integuments, outside the embryo sac.

Common examples of adventive polyembryony include Citrus species (like orange and lemon) and mango.

Pineapple does not exhibit adventive polyembryony; it is typically parthenocarpic and is propagated vegetatively.

Thus, pineapple is not a common example of adventive polyembryony.

Answer: Pineapple