In the diagram of types of placentation given above ${ }^{\prime} A^{\prime},{ }^{\prime} B ^{\prime},{ }^{\prime} C ^{\prime}$, and $^{\prime} D ^{\prime}$ respectively represent
Basal, axile, parietal and free central
Free central, parietal, basal and axile
Axile, basal, parietal and free central
Parietal, axile, free central and basal
Floral diagram fails to indicate
When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as
Zygomorphy in Cassia flower is due to
Flowers are zygomorphic in
Describe parts of a typical flower.