When the calyx and corolla are not distinct and are similar in appearance and color, the structure is called .......

The term $polyadelphous$ is applied to which of the following?

What is placentation? Describe the types of placentation.

Read the following statements.
$(i)$ Gynoecium is situated in the centre and other parts of the flower are located on the rim of the thalamus almost at the same level.
$(ii)$ Ovary is half-inferior.
$(iii)$ Examples are plum,rose and peach.
Which condition of flowers is being described by the above statements?

What are the approximate weight and diameter of $Rafflesia$ $arnoldii$?

Epipetalous stamens is the characteristic feature of $:-$