In which plant does the persistent calyx form a covering around the fruit?

Family $Fabaceae$ differs from $Solanaceae$ and $Liliaceae$. With respect to the stamens,pick out the characteristics specific to family $Fabaceae$ but not found in $Solanaceae$ or $Liliaceae$.

$K_{2+2} C_{4} A_{2+4} G_{\underline{(2)}}$ is the floral formula of:

The botanical name of $Asparagus$ is .....

Write a note on the Solanaceae family.

The placentation in Malvaceae is of ....... type.