Axile placentation is seen in which plants?

• A. Sunflower, Marigold
• B. Mustard, Argemone
• C. Dianthus, Primrose
• D. China Rose, Tomato, Lemon

Answer: (D)

Axile placentation means the ovary is divided into several compartments (locules) by septa, and the ovules are attached to a central axis where those septa meet. In this arrangement the placenta sits along the central column inside each locule.

China Rose (hibiscus) has a multilocular ovary with ovules attached to this central axis, so it shows axile placentation. Tomato also exhibits ovules arranged on the central axis within a multilocular ovary, which is another example of axile placentation. Lemon (citrus) has a similar pattern, with ovules arranged along the central axis inside the locules of its multilocular ovary.

So these three plants share the axile placentation type, matching the correct choice.