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Circulation and Gas exchange

Free 71+ Circulation and Gas exchange MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Practise below with answers and explanations.

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Circulation and Gas exchange — MCQs for Pakistan government job tests

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Circulation and Gas exchange

Practice questions

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1.it carries blood from the body tissues to the heart___________?

2.Antibodies are produced by___________?

3.The heart of an average adult beats about___________times per minute?

4.The major function of an erythrocyte is to pick up__________ from the environment?

5.Hemerythrin contains___________?

6.Reddish pigment that contains iron as the oxygen binding metal__________?

7.The human__________ is a hard working pump that moves blood through the body?

8.Coelomic fluid transports___________?

9.In heart beat, during each cycle phase of contraction called___________?

10.The annelids, such as earthworm have a __________circulatory system?

11._________are the most numerous WBC?

12.The__________ valve is between the right atrium and right ventricle?

13.Most aquatic invertebrates carry out gas exchange with___________?

14.The lymphatic system consists of __________way vessels?

15.__________are phagocytic?

16.Water is_________ times more viscous than air?

17.Rh factor is named after___________?

18.The antibodies are_________?

19.In most birds, air sacs are _________in number?

20.Hamburger’s phenomenon is also called__________?

How to prepare with Circulation and Gas exchange MCQs

  • Work through questions topic by topic, then revisit any you answered incorrectly.
  • Read explanations carefully—they often cover facts that repeat across PPSC, FPSC, and NTS papers.
  • Pair subject practice with past papers to see how Circulation and Gas exchange appears in real exam conditions.

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