LIFE SCIENCE

Detailed explanation-1: -The ancestral mammalian condition was to have four premolars (and a 3rd incisor) in each side of the jaw. This is a “dental formula” of 3-1-4-3, indicating the numbers of each tooth type from front to back. Over time, different groups of animals have lost some of these teeth.

Detailed explanation-2: -The dental formula of Dog Dogs are omnivores, which means they consume both plants and animals. The dental formula for Dog is: 2 x (3142 / 3143) = 42 teeth (6 incisors 2 canine 8 premolars and 4 molar) / (6 incisors 2 canine 8 premolars and 6 molar) = 42 teeth.

Detailed explanation-3: -While teeth serve the main role in grinding to reduce food size and increase surface area, the first action to begin the chemical breakdown of food occurs when feed is mixed with saliva.