In a unilocular ovary with a single ovule, the placentation is

Step-by-step solution

Placentation is the arrangement of the ovules in the ovary and their attachment to it. Placentation are of various type in the angiosperms - marginal, axile, central, parietal, basal, and free central. In marginal placentation, ovules are attached to the ridge formed on the ventral suture of the ovary without any locules. Pea plant has this arrangement. When the ovules are attached to the central column and the ovary wall forms chambers called locules separating the ovules from each other is said the axile placenta