- Respiration in mature mammalian erythrocytes are __________
- Linear
- Absent
- Anaerobic
- Aerobic
- Â __________ is not a characteristic feature of the respiratory surface
- Dry
- Thin
- Permeable
- Moist
- Human skin cannot function as a respiratory organ becauseÂ
- It is not permeable to O2 and CO2
- It is rather thick
- It is dry
- All of the above
- In cockroaches, inspiration occurs with __________
- Relaxation of tergo-sternal muscles
- Relaxation of abdominal muscles
- Neither (1) nor (2)
- Both (1) and (2)
- Pick out the statement that is wrong with respect to insects
- Abdominal muscles do not take part in respiration
- When abdominal muscles relax, the air is drawn in through spiracles and tracheoles
- Contracting abdominal muscles drive the air out through the spiracles
- Both (2) and (3)
- Where does the exchange of gases occur in birds?
- Air sacs only
- Air sacs and Lungs
- Lungs only
- First in air sacs and then in the lungs
- Spiracles in cockroaches are analogous to _______ in humans
- Trachea
- Nostrils
- Lungs
- None of the above
- Where are the conchae located?
- Auricle
- Brachioles
- Nasal Chambers
- Ville
- Laryngeal prominence is also known as __________
- Adam’s Apple
- Epiglottis
- Thyroids
- Laryngitis
- Glottis opens on the floor ofÂ
- Pharyngeal cavity
- Diagraphram
- Trachea
- None of the above
- The ring of cartilage that surrounds the trachea is called __________
- Treillage
- Voicebox
- Arytenoid cartilage
- Cricoid cartilage
- __________ prevents the collapse of the trachea
- Jugular foramen
- Cartilaginous rings
- Diaphragm
- None of the above
- Â __________ is glass-like, translucent cartilage found on many joint surfaces such as nose and trachea.
- Elastic cartilage
- Fibrous cartilage
- Hyaline cartilage
- None of the above
- The number of alveoli in human lungs is estimated to be around __________
- 150 million
- 500 million
- 800 million
- 1 billion
- The greater fissures in humans are present on
- Right lung
- Left lung
- Both right and left lungs
- Not present in the lungs
- Earthworms breathe through their __________
- Pores on its anterior end
- Head
- Skin
- Lungs
Answer Keys – Breathing And Exchange Of Gases MCQ
1 – 3 | 2 – 1 | 3 – 4 | 4 – 4 |
5 – 1 | 6 – 3 | 7 – 2 | 8 – 3 |
9 – 1 | 10 – 1 | 11 – 4 | 12 – 2 |
13 – 3 | 14 – 2 | 15 – 3 | 16 – 3 |
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