In which of the following families does the persistent calyx help in fruit dispersal?

$A$ family delimited by the type of inflorescence is

Distinguish between the families Fabaceae,Solanaceae,and Liliaceae on the basis of gynoecium characteristics. Also,write the economic importance of any one of the above families.

Floral formula of Cruciferae (Brassicaceae) is$-$

Which two families dominate in having the maximum number of useful plants?

In which family are epigynous flowers and unisexual flowers found?