In substitution type of questions, some particular objects are assigned code names. Then a question is asked that is to be answered in the code language.
If rose is called popy, popy is called lily, lily is called lotus and lotus is called glandiola, which is the king of flowers ?
The king of flowers is the 'lotus'.
But 'lotus' is called 'glandiola'.
So, 'glandiola' is the king of flowers.