Multiple choice

Consider the following statements:

  1. Except mammals and reptiles, no other animal group has the unique arrangement of three bones in the middle ear.
  2. Mammals are osmoregulators (maintain the pressure of body fluids).

Which of the given statements is/are correct?

  1. Only 1

  2. Only 2

  3. Both 1 and 2

  4. Neither 1 nor 2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Statement 1 is incorrect. Only mammals have the unique arrangement of three bones in the middle ear. Statement 2 is correct. Mammals are osmoregulators, i.e. they maintain the percentage of salts and water in their body.

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