- A valvate
- B twisted
- C vexillary
- D imbricate
Correct answer: C. vexillary
Explanation: The papilionaceous (pea) corolla has vexillary aestivation: a large standard overlaps two wings, which overlap the keel.
Concept context
External structure of roots, stems, and leaves plus internal tissue organization. High marks in Class 11 and NEET.