MDCAT Biology Gaseous Exchange Online Test MCQS

Photo of Malik Tahir Malik TahirLast Updated: July 12, 2025

MDCAT Biology Gaseous Exchange Test

Prepare for MDCAT Biology with this focused MCQ test on Gaseous Exchange. This quiz includes important questions on respiratory structures, mechanisms of gas exchange, and differences in plants and animals, following the latest MDCAT 2025 syllabus.

MDCAT 2025 Gaseous Exchange Test

Total Questions: 25
Time Allowed: 15 Minutes
Total Marks: 25
How to Attempt Test: Please choose the right Option in MCQ-type question.
Test Helpful For: MDCAT Entry Test
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Gaseous Exchange MCQS Online Question with Answer

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1. At all levels of activities in living organisms an uninterrupted supply of _______is required ?

2. Air spaces between mesophyll cells of a leaf comprise _______of total volume

3. Organismic respiration is also known as ?

4. In frog respiration occurs through ?

5. In cockroach the main tracheal trunk communicates with exterior by 10 pairs of paired apertures called  ?

6. Respiration is one of the most important metabolic activities of ?

7. Hydra respires through ?

8. Water is _______ times more viscous than air ?

9. Breathing is directly involved in the exchange of ?

10. Respiration os one of the most important metabolic activities of ?

11. In peroxisome the glycolate is converted in to ?

12. Exchange of gases during organismic respiration is carried out only by ?

13. Infact photorespiration is reverse of ?

14. In earthworm the exchange of gasses mainly occurs through ?

15. Four to five pairs of gills in fish are placed in bronchial cavities and are covered by ?

16. The main source of exchange of gases in plants is ?

17. Parabronchi are thin walled ducts present in the respiratory system of ?

18. The heart of fish is ?

19. The cork tissue has special pores involved in gaseous exchange called ?

20. Photorespiration in plants takes pace when ?

21. Oxygen content of fresh air is about ?

22. ATP is produced during ?

23. Photoresptration take place in ?

24. In fish the heart pumps blood directly to ?

25. In birds during respiration the flow of air is ?


 

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Photo of Malik Tahir Malik TahirLast Updated: July 12, 2025
Photo of Malik Tahir

Malik Tahir

Greetings, learners! I'm Tarry Malik, your guide to conquering the world of Exams prep and Online studies. Let's navigate the textbooks together, share study hacks, and make your educational journey a breeze.
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