First slide
The Flower
Question

Placental axis is present at the center of ovary and not supported by any septa in the ovaries of 

Easy
Solution

In Dianthus or in plants with free central placentation, the placental axis is at the center and not supported by septa. In axile placentation, the placental axis is supported by septa. In basal placentation, parietal placentation and marginal placentation the placental axis is not formed.

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