MHT CET 202621 AprilEvening Shift
- Exam
- MHT CET
- Year
- 2026
- Date
- 21 April
- Shift
- Evening Shift
- Subject
- Biology
- Chapter
- Breathing and Exchange of Gases
MHT CET 2026 · 21 April · Evening Shift · Biology · Breathing and Exchange of Gases
Identify the INCORRECT statement:
Identify the INCORRECT statement:
Options
- AOropharynx is the common passage for food and air
- BTonsils are lymphoid organs
- CEpiglottis is a flap that prevents the entry of food into trachea
- DTrachea is lined by complete cartilage rings
Correct answer
D. Trachea is lined by complete cartilage rings
Step-by-step solution
The trachea is a straight tube extending up to the mid-thoracic cavity. It is supported by incomplete cartilaginous rings (C-shaped), not complete rings. These rings prevent the trachea from collapsing during inspiration.
The pharynx (specifically the oropharynx) serves as a common passage for both food and air.
Tonsils are secondary lymphoid organs that help in fighting infections.
The epiglottis is a cartilaginous flap that covers the glottis to prevent the entry of food into the larynx and trachea during swallowing.
Therefore, the statement claiming that the trachea is lined by complete cartilage rings is incorrect.
Answer: Trachea is lined by complete cartilage rings
The pharynx (specifically the oropharynx) serves as a common passage for both food and air.
Tonsils are secondary lymphoid organs that help in fighting infections.
The epiglottis is a cartilaginous flap that covers the glottis to prevent the entry of food into the larynx and trachea during swallowing.
Therefore, the statement claiming that the trachea is lined by complete cartilage rings is incorrect.
Answer: Trachea is lined by complete cartilage rings