Practice question

Axile placentation develops in a multicarpellary, syncarpous, superior ovary where carpel margins fuse inward forming septa that converge into a central axis columella. Ovules are borne along this axis within each locule, so locule number equals carpel number. It contrasts with parietal where ovules lie on peripheral wall of unilocular ovary, free-central where septa dissolve leaving central columella without partitions, and basal where single ovule attaches at base. Classic examples include Hibiscus rosa-sinensis, Solanum lycopersicum and Lilium where multilocular ovaries provide extensive placental surface.