The Fundamental Duties of citizens are listed in Article 51-A of the Constitution, which was added by the 42nd Amendment in 1976. The list includes duties such as abiding by the Constitution (51-A(a)), promoting harmony (51-A(e)), and protecting the environment (51-A(g)). However, "to pay taxes promptly" is not listed as one of the eleven Fundamental Duties. While paying taxes is a crucial legal obligation of every citizen under various tax laws, it is not constitutionally enshrined as a Fundamental Duty in Part IV-A.