The correct option is D Actinomorphic flowers
A flower which can be divided into equal halves along any diameter is known as actinomorphic flower. Actinomorphic flower is one of the key character of monocot plants and is shown by flowers of family Liliaceae.
Hypogynous ovary is also one of the characteristic of flowers of Liliaceae but actinomorphic flower is more related to monocot.
Thus, the correct answer is option D.