Explain structure of stamen.
Among China rose, mustard, brinjal, potato, guava, cucumber, onion and tulip, how many plants have superior ovary?
What is called Aestivation ? Describe its types.
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?
$I.$ Standard petals $II.$ Wing petal $III.$ Keel petals
Above petals are found in