Question

Petals of a flower are arranged in such a way that each overlaps a petal on one side and is overlapped by other petal on the other side. The aestivation is _______.

• A. Valvate
• B. Quincuncial
• C. Imbricate
• D. Twisted

Answer 1

The correct option is D Twisted

The aestivation is the arrangement of sepals and petals in a flower. In the twisted aestivation of the corolla, one edge of the petal regularly overlaps the margin of the next petal and is overlapped by the other petal next to it. For example, China Rose.

A. In valvate aestivation, there is no overlapping.

B. In quincuncial aestivation, there are two outer petals, two inner petals and one twisted petal.

C. In imbricate aestivation, the overlapping is irregular

D. In twisted aestivation, there is regular overlapping.

Hence, the correct answer is 'Twisted'.