Question

In bean flower, the largest petal (A), lateral petal (B), anterior petal (C) and their aestivation (D) are

$\begin{array}{ccccc}& \text{(A)}& \text{(B)}& \text{(C)}& \text{(D)}\\ \text{(1)}& \text{Wing}& \text{Keel}& \text{Standard}& \text{Imbricate}\\ \text{(2)}& \text{Standard}& \text{Wing}& \text{Keel}& \text{Vexillary}\\ \text{(3)}& \text{Standard}& \text{Keel}& \text{Wing}& \text{Vexillary}\\ \text{(4)}& \text{Wing}& \text{Standard}& \text{Keel}& \text{Valuate}\end{array}$

• A. $\left(3\right)$
• B. $\left(1\right)$
• C. $\left(4\right)$
• D. $\left(2\right)$

Answer 1

The correct option is D $\left(2\right)$

Answer (2)
In bean flower, standard petal overlaps the two smaller lateral petals (wings or alae) which in turn overlap the two smallest anterior petals (keel). The aestivation in corolla is vexillary.