Solution

An actinomorphic flower can be divided into two equal radial halves in any radial plane through its centre (radial symmetry). $Datura$ has actinomorphic flowers, whereas $Pisum$, $Sesbania$ and $Cassia$ have zygomorphic flowers.

Concept Identifying radially symmetric (actinomorphic) flowers

Morphology of Flowering Plants in past papers

133 questions from this chapter have appeared across 26 exam years.