NEETBotanyMorphology of Flowering Plants
Which of the following statements accurately describes the placentation found in Dianthus and primrose?
Options
- AThe ovules develop on the inner wall of the ovary or on peripheral part
- BA single ovule is attached to the base of the ovary
- CThe placenta is axial and the ovules are attached to it in a multilocular ovary
- DThe ovules are borne on the central axis and septa are absent
Correct answer
D. The ovules are borne on the central axis and septa are absent
Step-by-step solution
Dianthus and primrose exhibit free central placentation. In free central placentation, the ovules are borne on the central axis and septa are absent. Option 1 describes parietal placentation (e.g., mustard, argemone). Option 2 describes basal placentation (e.g., sunflower, marigold). Option 3 describes axile placentation (e.g., China rose, tomato, lemon). Answer: The ovules are borne on the central axis and septa are absent