In which of the following plants is the androecium fused with the corolla?

Match the Column $I$ and Column $II$:

Column $I$	Column $II$
$(a)$ Apocarpous	$(i)$ Papaver
$(b)$ Syncarpous	$(ii)$ Michelia
$(c)$ Epiphyllous	$(iii)$ Cashew
$(d)$ Cotyledon	$(iv)$ Aloe

The technical term used for the gynoecium in a Hibiscus flower is ..........

Which type of carpel is observed in $Michelia$?

The mode of arrangement of sepals or petals in a floral bud is known as aestivation. Describe the various types of aestivation found in flowers.

In which condition are the flowers always in a single whorl of perianth?