The given figure represents vexillary aestivation. Select the suitable labels for P,Q and R

Options

A. `{:(" (P)","(Q)","(R)"),("Standard","Wing","Ala"):}`
B. `{:(" (P)","(Q)","(R)"),("Standard","keel","Wing"):}`
C. `{:(" (P)","(Q)","(R)"),("Wing","keel","Carina"):}`
D. `{:(" (P)","(Q)","(R)"),("Standard","Ala","Carina"):}`

Answer

D

Explanation

In verxillary/descending imbricate aestivation, the posterior petal (standard) overlaps the two lateral petals (wings or alae) and the latter overlap the two anterior petals (keel or carina). It is also called papilionaceous corcolla and is found in members of Family papilionanceae.