Keel is the characteristic feature of flower of

Explanation

(d) : The flowers of Family Papilionaceae have butterfly shaped corolla (papilionaceous corolla). The correct answer is Indigofera. Indigofera is a genus of flowering plants in the legume family, Fabaceae. The flowers of Indigofera have a characteristic keel, which is a large, fused petal that forms the lower part of the flower. The keel is often brightly colored and attracts pollinators. Aloe is a genus of succulent plants in the family Xanthorrhoeaceae. The flowers of aloe are typically tubular or bell-shaped and do not have a keel. Tomato is a flowering plant in the nightshade family, Solanaceae. The flowers of tomato are also typically tubular or bell-shaped and do not have a keel. Tulip is a genus of spring-blooming perennial herbaceous bulbiferous plants in the lily family, Liliaceae. The flowers of tulips are typically cup-shaped or bell-shaped and do not have a keel.