Respiration And Circulation MCQS For MHT-CET 2023-2024.

 Respiration And Circulation Subtopics For MHT-CET

  • Organs Of Respiratory Exchange 
  • Human Respiratory System 
  • Mechanism Of Respiration
  • Regulation Of Breathing 
  • Modified Respiratory Movements 
  • Common Disorders Of Respiratory System 
  • Transportation In Living Organism 
  • Circulation In Animals
  • Circulatory System In Humans 
  • Human Heart
  • Working Mechanism Of Heart 
  • Regulation Of Cardiac Activity 
  • Blood Vessels 
  • Blood Pressure 
  • Electrocardiogram
  • Lymphatic System 

Multiple Choice Questions For Biology MHT-CET

Q1. Gaseous exchange in woody flowering plants occurs through:

A. Lenticels
B. Vestibule 
C. Stomata
D. Spiracles 
Correct Answer:(B)

Q2. In sponges and coelenterates, gaseous exchange takes place:

A. Gills 
B. Tracheal tubes 
C. Plasma membrane 
D. Book lungs 
Correct Answer:(C)

Q3. _________ use their body surfaces for gaseous exchange.

A. Flatworms 
B. Salamanders 
C. Arthropods 
D. Turtles 
Correct Answer:(A)

Q4. Which of the following respire through tracking tubes ?

A. Fish 
B. Flatworms 
C. Insects 
D. Amphibians 
Correct Answer:(C)

Q5. Spiders and scorpions respire through:

A. Cloaca
B. Book gills 
C. Book lungs 
D. Lungs 
Correct Answer:(C)

Q6. Respiration in tadpoles occur through:

A. External gills 
B. Spiracles 
C. Tracheal tubes 
D. Cloaca 
Correct Answer:(A)

Q7. Aquatic arthropods use ________ for respiration.

A. Book gills 
B. Tracheal tubes 
C. Spiracles 
D. Book lungs 
Correct Answer:(A)

Q8. Reptiles, birds and mammals respire through ______ as an adaptation for terrestrial life.

A. Lungs 
B. Gills 
C. Trachea 
D. Book gills 
Correct Answer:(A)

Q9. The respiratory system brings about:

A. Inspiration 
B. Expiration 
C. Exchange of gases
D. All of these
Correct Answer:(D)

Q10. ________ is a part of upper respiratory system.

A. Bronchiole 
B. Trachea 
C. Larynx 
D. Nasal cavity 
Correct Answer:(D)

Q11. The lower respiratory system refers to:

A. Larynx and trachea 
B. Bronchi, bronchioles 
C. Lungs 
D. All of these 
Correct Answer:(D)

Q12. Nostrils are:

A. External nares 
B. Internal nares 
C. Vestibules
D. Nasal cavities 
Correct Answer:(A)

Q13. Nasal cavity is divisible into right and left chambers by:

A. Oropharynx 
B. Mesethmoid cartilage 
C. Glottis 
D. Epiglottis 
Correct Answer:(B)

Q14. The proximal part of nostrils is:

A. Vestibule 
B. Respiratory part 
C. Olfactory part 
D. Sensory chamber 
Correct Answer:(A)

Q15. Which of the following part of nasal chamber warms the air and makes it moist?

A. Vestibule 
B. Respiratory  part 
C. Sensory part 
D. External nares 
Correct Answer:(B)

Q16. ________ is also known as sensory chamber.

A. Vestibule 
B. Respiratory part 
C. Olfactory chamber 
D. Conditioning chamber 
Correct Answer:(C)

Q17. The number of tonsils is humans are:

A. 2
B. 5
C. 6
D. 8
Correct Answer:(B)

Q18. ________ is known as windpipe.

A. Lungs 
B. Trachea 
C. Pharynx 
D. Vestibule 
Correct Answer:(B)

Q19. Terminal bronchioles and into:

A. Primary bronchioles
B. Bronchi
C. Tertiary bronchioles 
D. Alveoli
Correct Answer:(D)

Q20. Lungs are located in:

A. Thoracic cavity
B. Abdominal cavity
C. Pelvic cavity
D. Coelomic cavity
Correct Answer:(A)

Q21. Outer pleural layer is:

A. Visceral 
B. Parietal 
C. Pulmonary 
D. thoracic
Correct Answer:(B)

Q22. Each lung has the terminal bronchioles which end in______ alveoli.

A. 2-3
B. 5-6
C. 10-12
D. 20-30
Correct Answer:(C)

Q23. Alveolar wall is made up of __________ epithelium resting on a basement membrane of connective tissue.

A. Ciliated 
B. Squamous 
C. Columnar 
D. Cuboidal 
Correct Answer:(B)

Q24. There are about ________ alveoli in lungs which provide surface area for exchange of gases.

A. 200
B. 5 thousands 
C. 60 lakhs 
D. 700 million 
Correct Answer:(D)

Q25. __________ is a muscular septum that separates the thoracic and abdominal cavity.

A. Diaphragm 
B. Epiglottis 
C. Glottis 
D. Trachea 
Correct Answer:(A)

Q26. The process by which gaseous exchange takes place between the atmosphere and the lungs is:

A. Breathing 
B. External respiration 
C. Internal respiration 
D. Cellular respiration 
Correct Answer:(A)

Q27. During inspiration, __________ becomes flat.

A. Sternum 
B. Ribs 
C. Lungs 
D. Diaphragm 
Correct Answer:(D)

Q28. During inspiration, the sternum moves:

A. Upward 
B. Inward 
C. Downward and inward 
D. Upward and outward 
Correct Answer: (D)

Q29. Volume of thoracic cavity _______ during inspiration.

A. Increases 
B. Decreases
C. Remains constant 
D. Initially decreases and then increases
Correct Answer: (A)

Q30. The partial pressure of Co2 of blood entering the pulmonary capillaries is _______ mmHg. 

A. 20
B. 45
C. 80
D. 95
Correct Answer: (B)

Q31. ppCO2 in alveolar air is ______ mmHg.

A. 30 
B. 40 
C. 90
D. 100
Correct Answer: (B)

Q32. Tidal volume is:

A. 200 ml 
B. 500 ml 
C. 1500 ml
D. 1000 ml
Correct Answer: (B)

Q33. Inspiratory reserve volume is about:

A. 500 ml 
B. 1000 to 1100 ml
C. 2000 to 3000 ml 
D. 4100 to 4500 ml 
Correct Answer: (C)

Q34. The maximum volume of air that is expired during forced breathing after normal expiration is :

A. Tidal volume 
B. Expiratory reserve volume 
C. Residual volume 
D. Inspiratory reserve volume 
Correct Answer: (B)

Q35. Residual volume is about:

A. 500 to 1000 ml 
B. 1100 to 1200 ml 
C. 2000 to 3000 ml 
D. 4000 to 4500 ml
Correct Answer: (B)

Q36. ______ % of  O2 is bound to haemoglobin present in RBCs.

A. 3
B. 27 
C. 53
D. 97
Correct Answer: (D)

Q37. Oxyhaemoglobin  is transported  from lungs to the:

A. Tissues 
B. Alveoli 
C. Bronchi
D. Bronchioles
Correct Answer: (A)

Q38. Affinity of haemoglobin for carbon monoxide is about _______ times more, than for oxygen.

A. 10
B. 100
C. 250
D. 500 
Correct Answer: (C)

Q39. _______ % of CO2 is transported in a dissolved form as carbonic acid.

A. 7
B. 30 
C. 50 
D. 70
Correct Answer: (A)

Q40. Approximately ___________ % of carbon dioxide released by tissue cells diffuses into the plasma and then into RBCs.

A. 7
B. 10
C. 30
D. 70
Correct Answer: (D)

Q41. _________ is the last step that place inside the cell where food is oxidized and ATP is generated.

A. External respiration 
B. Internal respiration 
C. Cellular respiration 
D. Inspiration 
Correct Answer: (C)

Q42. Respiration is controlled by neurons located in:

A.  Pons
B. medulla 
C. Cerebrum 
D. Both (A) and (B)
Correct Answer: (D)

Q43. Pneumotaxic center is located in:

A. Medulla 
B. Pops 
C. Cerebrum 
D. Cerebellum 
Correct Answer: (B)

Q44. Hering-Breuer reflex controls :

A. Heart rate 
B. Cellular respiration 
C. Rhythm of respiration
D. Body equilibrium 
Correct Answer: (C)

Q45. Which of the following is/are modified respiratory movement/s ?

A. Coughing 
B. Hiccupping 
C. Yawning 
D. All of these 
Correct Answer: (D)

Q46. Emphysema is characterized by:

A. Breakdown of alveoli 
B. Inflammation of trachea 
C. Constriction of bronchioles 
D. Inflammation of larynx 
Correct Answer: (A)

Q47. The respiratory disorder emphysema is caused due to:

A. Smoking or air pollution 
B. Bacterial infection 
C. Viral infection 
D. Allergy to some foods 
Correct Answer: (A)

Q48. Long term exposure to dust containing silicon compounds causes:

A. Sinusitis 
B. Silicosis
C. Laryngitis
D. Emphysema 
Correct Answer: (B)

Q49. Artificial ventilation is also called as:

A. Artificial respiration 
B. Cellular respiration 
C. External respiration 
D. Internal respiration 
Correct Answer: (A)

Q50. Single circulation occurs in:

A. Fishes 
B. Tigers 
C. Molluscs
D. Birds 
Correct Answer: (A)

                                          THANKS FOR VISITING !




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