Vascular bundles are arranged in a ring in the members of family
Orchidaceae
Iridaceae
Euphorbiaceae
Liliaceae
The arrangement and folding of each lamina without any relationship with other leaves in bud, is called
Rauwolfia serpentina belongs to family
Clinging and epiphytic roots are found in
$A$ : Androecium of Cucurbita is synandrous.
$R$ : Anthers as well as filaments of stamens are united throughout their whole length.