In $Gossypium$,the type of cohesion is:

Identify the type of petals in the given diagrams $(A, B$ and $C)$.

When two stamens are short and two are long,they are known as:

Among Indigofera,Sesbania,Salvia,Allium,Aloe,mustard,groundnut,radish,gram,and turnip,how many plants have stamens of different lengths in their flowers?

The angiosperm to which the largest flower belongs is a:

$Rafflesia$ $arnoldii$ is .........