Corolla in China rose are:

In an epigynous flower,the ovary is situated below the $......$

The arrangement of ovules within the ovary is known as placentation. What does the term placenta refer to? Name and describe various types of placentations in flowers as seen in $T.S.$ or $V.S$.

Match the following columns regarding placentation in plants:

Column-$I$ (Placentation)	Column-$II$ (Examples)
$P$. Parietal	$I$. Dianthus,Primrose
$Q$. Axile	$II$. Sunflower,Marigold
$R$. Marginal	$III$. Pea
$S$. Free central	$IV$. Lemon,China rose,Tomato
$T$. Basal	$V$. Mustard,Argemone

Which of the following is correct for the vexillary aestivation (papilionaceous)?
Standard (Vexillum) $\quad$ Wings (Alae) $\quad$ Keel (Carina)

Among Indigofera,Sesbania,Salvia,Allium,Aloe,mustard,groundnut,radish,gram,and turnip,how many plants have stamens of different lengths in their flowers?