The Leaf|The Flower|Position of Floral Parts on Thalamus

Thalamus is

Based on the position of floral parts on thalamus, the flowers, are described as hypogynous, perigynous and epigynous. Which of the following floral forms (A-D) represents the flowers of Rosa and Prunus respectively ?

Refer to the given figures, showing relative position of different floral parts on the thalamus and select the correct option .

Correct position of floral parts over thalamus in mustard plant is:

In a typical complete, bisexual and hypogynous flower the arrangement of floral whorls on the thalamus from the outermost to the innermost is

The most suitable flower for study of floral parts is