Placentation,in which ovules develop on the inner wall of the ovary or in the peripheral part,is:

Floral appendages are modifications of ........ .

United sepals are called ...$A$... Free sepals are called ...$B$....
Here,$A$ and $B$ refer to:

Describe the parts of a typical flower.

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?

Identify the type of ovary in the given diagram.