What term is used to describe the entire process from pollen deposition on the stigma to the pollen tube entering the ovule?

Step-by-step solution

Pollen tube grows through the tissues of the stigma and style and reaches the ovary You would recall that in some plants, pollen grains are shed at two-celled condition (a vegetative cell and a generative cell). In plants which shed pollen in the three-celled condition, pollen tubes carry the two male gametes from the beginning. Pollen tube, after reaching the ovary, enters the ovule through the micropyle and then enters one of the synergids through the filiform apparatus .Many recent studies have shown that filifo