If the anthers are fused together forming a tubular structure while the filaments remain free, the condition is found in which one of the following family?

Butterfly shaped corolla, monocarpellary ovary and zygomorphic flowers are found in family

Family fabaceae is concerned with

Find out a set of common $N_2$ fixing fodder plants

Choose correct option from the given sentences.

$(a)$ Bisexual flower

$(b)$ Zygomorphic flower

$(c)$ Imbricate aestivation

The standard petal of a papilionaceous corolla is also called