EVERYDAY SCIENCE

Detailed explanation-1: -In the case of free central placentation, the ovules develop on the central column. The ovary consists of only one chamber. Septa is generally a divider that separates two chambers. Septa remains absent in free central placentation.

Detailed explanation-2: -In free central placentation, ovules are borne around a central column, which is not connected with the ovary wall by any septum. e.g. Dianthus. Brassica and Argemone have parietal placentation while citrus has axile placentation.

Detailed explanation-3: -In free central placentation, the ovules develop on the central axis while the septa are absent. This type of placentation is found in Dianthus and primrose.

Detailed explanation-4: -The plant Dianthus has free-central placentation arrangement in it’s ovary. Ovules are attached on the main axis of the placenta.