Axile placentation is present in

Explanation

(d) :Axile placentation occurs in syncarpous pistils. Lemon is the only plant listed that has axile placentation. Pea has marginal placentation, which means that the ovules are borne on the margins of the carpels. Argemone has parietal placentation, which means that the ovules are borne on the inner walls of the ovary, but not on the central axis. Dianthus has free central placentation, which means that the ovules are borne on a central column that is not attached to the sides of the ovary. Lemon has axile placentation, which means that the ovules are borne on the central axis of the ovary.Therefore, the correct answer is lemon.