Which of the following has a cup-shaped thalamus?

The arrangement of sepals or petals in the floral bud with respect to the other members of the same whorl is known as:

What is the size of the plant $Wolffia$ $globosa$?

$A$ typical angiosperm flower consists of four floral parts. Give the names of the floral parts and their arrangements sequentially.

In . . . . . . placentation,the placenta forms a ridge along the ventral suture of the ovary.

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?