Which one of the following plants shows vexillary aestivation and diadelphous stamens ?

Reproductive whorl of flower.

The mode of arrangement of sepals or petals in a floral bud is known as aestivation. Draw the various types of aestivation possible for a typical pentamerous flower.

Identify the type of flowers based on the position of calyx, corolla and androecium with respect to the ovary from the given figures ($a$) and ($b$)

Flowers are zygomorphic in