Axile placentation is present in (a) pea (b) Argemone (c) Dianthus (d) lemon.
Option D Axile placentation occurs in syncarpous pistils. The ovary is partitioned into two or more chambers. Placentae occur in the central region where the septa meet so that an axile column bearing ovules is formed e.g., shoe flower (pentalocular), lemon (multilocular), etc.
