Question

Canines are reduced or absent in

• A. Lagomorpha
• B. Rodentia
• C. Perissodactyla
• D. All the above

Answer 1

The correct option is D All the above

• In Mammalian oral anatomy, the canine teeth, are relatively long, pointed teeth. They are also known as cuspids, dog teeth, fangs.
  
• Some species, like squirrels, spend most of their time in trees, other species, like beavers, spend a lot of time in the water. All rodents have one thing in common, they have specialized teeth for gnawing. They don't have canine teeth, so there is a gap between their incisors and their molars
• Lagomorphs are small to medium-sized animals that in many ways resemble large rodents. As in rodents, canines are absent.
• Perissodactyls are said to have evolved from the Phenacodontidae, small, sheep-sized animals have developed reduced canine teeth and specialized molars. Hence, Canines are reduced or absent in Lagomorphs, Rodentia and

Perissodactyls.
So, the correct answer is 'all the above'.