Question

The margins of sepals or petals are overlap one another but not in particular direction.

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

Hint:

When confused between types of aestivation, visualize petal arrangement or use examples like Cassia (imbricate), Hibiscus (twisted), etc.

Answer 1

The Correct Option is B

Twisted: Each petal overlaps the next in one consistent direction — not the case here.
Imbricate: Petals overlap each other, but the direction of overlap is irregular — matches the question.
Valvate: Margins do not overlap but just touch — incorrect.
Vexillary: One large petal overlaps two lateral ones, which in turn overlap the two innermost — specific to papilionaceous corolla.