Which one of the following plants shows vexillary aestivation and diadelphous stamens?

Which one of the following plants shows vexillary aestivation and diadelphous stamens?
  1. Pisum sativum
  2. Allium cepa
  3. Solanum nigrum
  4. Colchicum autumnale

Solution

  • Inflorescence: racemose
  • Flower: bisexual, zygomorphic
  • Calyx: sepals five, gamosepalous; valvate/imbricate aestivation
  • Corolla: petals five, polypetalous, papilionaceous, consisting of a posterior standard, two lateral wings, two anterior ones forming a keel (enclosing stamens and pistil), vexillary aestivation. 
  • Androecium: ten, diadelphous, anther dithecous 
  • Gynoecium: ovary superior, mono carpellary, unilocular with many ovules, style single.

    • Asked in: NEET 2022 (Phase 1)

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