( 1 )Homodont dentition is the type of dentition in which all the teeth in the jaw look alike. It is mostly seen in the majority of vertebrates such as fish, amphibians like frogs and reptiles. In them, all the teeth are functionally and anatomically of the same type. While in mammals like human beings, there are functionally four different types of teeth namely, flat incisors for cutting, long and pointed canines for tearing flesh and large and broad premolars and molars with flat and grinding surfaces. Molars have no counterpart in milk teeth. This type of dentition is known as heterodont dentition.So, option (c) is correct.( 2 )The dental formula for a mammal is given as ICPM= \\dfrac{2023}{1023} . The numerator in the formula indicates the number of teeth on one side of the upper jaw, while the denominator indicates the number of teeth on one side of the lower jaw. The formula indicates that there are 2 incisors, 0 canines, 2 premolars and 3 molars in one side of the upper jaw and 1 incisor, 0 canine, 2 premolars and 3 molars in one side of the lower jaw.So, option (b) is correct.