Question

Which of the following is a characteristic feature of a rat?

• A. Nictating membrane
• B. Tympanic membrane
• C. Digits
• D. All of the above

Answer 1

The correct option is D All of the above

A)Nictitating membrane is present in the eyes of the rat used as a protective covering of cornea when necessary. It also helps in cleaning debris of eyes.

B)The tympanic membrane is present in the ear that helps rat in hearing.

C)They have digits on the tip of their hindlimbs and forelimbs.

Presence of these structures is characteristic features of a rat.

So the correct option is 'All of the above'.