White spongy floating roots occur in
Trapa
Nymphaea
Eichhornia
Jussiaea
Most important character of Brassica campesteris is
Beauty of Bougainvillea flower is due to
In Amorphophallus and Colocasia $(Ariods)$ an extremely enlarged underground vertical stem meant for vegetative reproduction and storage is
When two stamens are short and two are long, they are
Opening of flowers in the cymose inflorescence is