Question

Placentation in a syncarpous unilocular ovary where ovules occur on sutures is

• A. Apical placentation
• B. Parietal placentation
• C. Marginal placentation
• D. Superficial placentation

Answer 1

The correct option is B Parietal placentation

The arrangement of ovules on the placenta attached to the ovary is called the placentation. In parietal placentation, the placenta forms a ridge along the ventral suture in the syncarpous unilocular ovary and the ovules are attached to it. The ventral suture is the place where the carpels have fused. This makes ovary falsely bilocular and the ridge so formed is called replum. It is visible in mature fruit, for example, Brassica.

Hence, the correct answer is 'Parietal Placentation'.