Select the correct option for A,B and C in the given diagram of papilionaceous corolla.

Options

A. `{:("(A)"," (B)"," (C)"),("Keel","Wings","Vexillum"):}`
B. `{:("(A)"," (B)"," (C)"),("Vexillum","Keel","Wings"):}`
C. `{:("(A)"," (B)"," (C)"),("Vexillum","Wings","Keel"):}`
D. `{:("(A)"," (B)"," (C)"),("Wings","Keel","Vexillum"):}`

Answer

C

Explanation

In papilinaceous corolla, five unequal petals are arranged like a buttergly. The posterior large bilobed petal is called standard or vexillum and it overlaps two smaller lateral petals called wings/alae. The latter in turn overlap the two anterior petals which are fused by the upper anterior margins to form a boat-shaped structure called keel or carina.