In a unilocular ovary with a single ovule,the placentation is

Epigynous flowers are found in .........

In which condition are the flowers always in a single whorl of perianth?

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?

Compound apocarpous gynoecium is found in

Cross sections of ovaries of four different plants are given below. Assign the placentations to their respective plants.