What type of flowers are present in the plant shown in the given figure?

Among flowers of Calotropis,tulip,Sesbania,Asparagus,Colchicum,sweet pea,Petunia,Indigofera,mustard,soybean,tobacco and groundnut,how many plants have corolla with valvate aestivation?

An anthophore is an internode between:

False septum is found in the ovary of the flower of

Keel is a characteristic feature of the flowers of

Vexillary aestivation is a characteristic feature of ...... flowers.