Question

Out of $5$ petals of a flower, two are completely internal, two completely external and remaining one is internal at one margin and external at the other margin. Aestivation is

• A. Ascending imbricate
• B. Vexillary
• C. Quincuncial
• D. Valvate

Answer 1

The correct option is C Quincuncial

Quincuncial type of aestivation is the modified form of imbricate aestivation. In this type of aestivation, the corolla has 5 petals, out of which the 2 petals are completely external and 2 are completely internal. The remaining 1 petal is twisted. It is seen in Ipomoea, guava.

Hence, the correct answer is 'Quincuncial'