Question

One chambered ovary has ovules borne on a long placenta attached to wall in the region of ventral suture. It is

• A. Superficial
• B. Basal
• C. Marginal
• D. Parietal

Answer 1

The correct option is C Marginal

In marginal placentation, the ovary is one-chambered or unilocular. The placenta is long and it forms a ridge along the ventral suture. The ovules are borne on this placenta in two rows. It is seen in pea.

A. In superficial placentation is the feature of the multicarpellary and multilocular ovary. The placenta develops all along the inner surface of the partition wall.

B. Basal placentation is seen in the bicarpellary syncarpous ovary, the placenta develops at the base.

C.. Marginal placentation develops in unilocular monocarpellary ovary.

Placenta develops on the ventral suture.

D. Parietal placentation is seen in the multicarpellary syncarpous unilocular ovary and placenta develops at the place of fusion of the ovary walls.

Hence, the correct answer is 'Marginal Placentation'.