The term 'polyadelphous' is related to

Identify the position of gynoecium in the given diagrams $A$ to $D$.

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$a$. Imbricate	$i$. Calotropis
$b$. Valvate	$ii$. Cassia
$c$. Vexillary	$iii$. Cotton
$d$. Twisted	$iv$. Bean

Choose the correct answer from the options given below:

$A$ longitudinal or vertical section of the flower indicates:

Among bitter gourd,mustard,brinjal,pumpkin,China rose,lupin,cucumber,sunn hemp,gram,guava,bean,chilli,plum,Petunia,tomato,rose,Withania,potato,onion,Aloe,and tulip,how many plants have hypogynous flowers?

Arrange the given figures in the correct order of aestivation types.