Assertion : Flowers of mustard are actinomorphic.Reason: Flowers of mustard can be cut into two equal halves on any radial plane.

In the families brassicaceae (mustard) solanaceae (datura and chillies) and liliaceae (onion, garlic, Gloriosa), the flowers can be cut into two equal parts on any radial plane. Such flowers are described as actinomorphic.