The arrangement of ovules within the ovary is known as placentation. What does the term placenta refer to ? Draw various types of placentations in the flower as seen in $\mathrm{TS}$ and $\mathrm{VS}$.

Which is correct group of half interior 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 ($b$)

Flower is complete when it has

Aestivation of corolla in Pea is