Question

In Pea, the largest petal overlaps the two lateral petals, which in turn overlaps the two smallest petals. This type of aestivation is known as:

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

Answer 1

Answer:

B. Vexillary

• The mode of arrangement of sepals and petals in the flower is called aestivation.

• If the largest petal (standard) overlaps the two lateral petals (wings) which in turn overlaps two smaller anterior petals (keel), then the aestivation is known as vexillary or papilionaceous.

• Example: Pea and bean flower.
  

Vexillary