Question

In the diagram of type of placentation given above 'A' 'B' 'C' and 'D' respectively represent .

• A. Basal, axile, parietal and free central
• B. Free central, parietal, basal and axile
• C. Axile, basal, parietal and free central
• D. Parietal, axile, free central and basal
• E. Axile, free central, basal and parietal

Answer 1

The correct option is C Axile, basal, parietal and free central

Axile placentation - placenta bears ovules developing from the central axis of a compound ovary corresponding to the fused margins of carpels. e.g., Citrus, Solanum.
Basal placentation- placenta present on the base of the unilocular ovary. e.g., Sonchus.

Parietal placentation - The placenta bears the ovules on the inner wall of the ovary and their position corresponds to the fused margins of carpels. The ovary is one chambered. e.g., Argemone.
Free-central placentation - the ovules are borne on a central column without any septa and the ovary is unilocular. e.g., Stellaria.
So, the correct answer is 'Axile, Basal, parietal and free central'.