Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?
$Yucca$
$Hydrilla$
$Banana$
$Viola$
Identify the set of correct statements:
$A$. The flowers of Vallisneria are colourful and produce nectar.
$B$. The flowers of water lily are not pollinated by water.
$C$. In most of water-pollinated species, the pollen grains are protected from wetting.
$D$. Pollen grains of some hydrophytes are long and ribbon like.
$E$. In some hydrophytes, the pollen grains are carried passively inside water.
Choose the correct answer from the options given below.
Advantage of cleistogamy is
Pollination by water is seen in
Type of pollination in commelina is
Common floral reward provided by plants to pollinator are