Explain the parietal type of placentation with the help of a diagram

Explain the parietal type of placentation with the help of a diagram.

In parietal placentation, the ovules develop on the inner wall of the ovary. The ovary is one-chambered, but it becomes two-chambered due to the formation of the false septum.

The parietal type of placentation is seen in mustard flower.
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