Biology · Chapter 9 of 19

Respiratory System: BPSC & UPPCS Prelims PYQs

3 previous-year questions on Respiratory System. Each one opens to its answer and explanation.

1. 1. UPPSC Prelims 2025

   Which of the following statements is/are correct?
   1. Dolphins and Whales breathe through blowholes.
   2. Earthworm breathe through their skin. Select the correct answer from the code given below:

   1. AOnly 1
   2. BBoth 1 and 2
   3. CNeither 1 nor 2
   4. DOnly 2
   Answer and explanation →

2. 2. UPPSC Prelims 2024

   CPR stands for:

   1. ACardiac Pulsatile Revision
   2. BCardiopulmonary Resuscitation
   3. CCardio Programme Rescue
   4. DCardiopulmonary Revision
   Answer and explanation →

3. 3. UPPSC Prelims 2021

   Site of gaseous exchange in lungs is

   1. ATracheoles
   2. BBronchioles
   3. CPulmonary vein
   4. DAlveoli
   Answer and explanation →