Which of the following depicts the external features of a rat as mammal?
Answer Details
The option that depicts the external features of a rat as a mammal is "fur and whisker."
Rats are a type of mammal, which means that they share certain features with other mammals such as humans, dogs, and cats. One of the most noticeable features of rats is their fur, which is made up of dense, soft hairs that cover their entire body. This fur helps to keep them warm and provides protection from the elements.
Another distinguishing feature of rats as a mammal is their whiskers. Rats have long, sensitive whiskers on their face that they use to navigate their surroundings and sense potential predators. These whiskers are very important for rats, as they allow them to detect changes in their environment, even in the dark.
Other features that are characteristic of mammals, such as the diaphragm and lungs, milk production, and a long intestine and tail, are not unique to rats and are shared by many other mammal species.
In summary, the external features that best depict a rat as a mammal are their fur and whiskers, which are unique to this group of animals and help to distinguish them from other types of animals.