Floral formula given below represents the family with one of the following group of plants?
Crotolaria and Astragalus
Lepidium and Iberis
Allium and Asparagus
Vetiveria and Cymbopogon
A plant called plantless root is
Seeds of the orchids are
The term Anthesis is used for
The whorl of bracts present below the inflorescence of Helianthus $(sunflower)$ is