polymorphism (contd as an example of polymorphismsuppose we declare list animals ['kitty''fido''tabby''quacker''spot'of catsdotsand duck -instances made from different classes in some animal hierarchy -and if we were to invoke method calculateiq(on this list of animals in the following fashion for item in animalsitem calculateiq(polymorphism would cause the correct implementation code for calculateiq(to be automatically invoked for each of the animals purdue university