Welcome to our NEET Biology Mock Test for Breathing and Respiration. This test is designed to help you assess your understanding of the respiratory system, including its organs, functions, and disorders. The questions cover a range of topics related to breathing and respiration, and each question is followed by a detailed explanation to aid your learning.
NEET Biology Mock Test for Breathing and Respiration
The test consists of 30 multiple-choice questions, each with four answer options. Choose the best answer for each question and check your understanding with the explanations provided. These questions are designed to challenge your knowledge and help you prepare for the NEET 2024 examination. Let's explore some challenging questions related to the topic of Breathing and Respiration to test your understanding.
- Question:
Which of the following is not considered a respiratory organ in the animal
kingdom?
- A)
Gills
- B)
Spiracles
- C)
Tracheal tubes
- D)
Malpighian tubules
- Answer:
D) Malpighian tubules
- Explanation:
Malpighian tubules are excretory organs in insects, not respiratory
organs.
- Question:
Which respiratory system in humans is responsible for the exchange of
gases?
- A)
Upper respiratory system
- B)
Lower respiratory system
- C)
Respiratory tree
- D)
Alveoli
- Answer:
D) Alveoli
- Explanation:
The alveoli serve as the primary location for gas exchange within the
lungs.
- Question:
What is the primary function of the diaphragm in the mechanism of
breathing?
- A)
Contracting during inhalation
- B)
Relaxing during exhalation
- C)
Contracting during exhalation
- D)
Relaxing during inhalation
- Answer:
A) Contracting during inhalation
- Explanation:
The diaphragm contracts during inhalation, causing it to flatten and
increase the volume of the chest cavity.
- Question:
Which of the following statements about respiration is incorrect?
- A)
Respiration involves the exchange of gases.
- B)
Respiration produces carbon dioxide and water.
- C)
Respiration occurs at the cellular level.
- D)
Respiration is the same as breathing.
- Answer:
D) Respiration is the same as breathing.
- Explanation:
Respiration includes breathing but also encompasses cellular processes.
- Question:
Which of the following is a disorder related to the respiratory system?
- A)
Diabetes
- B)
Asthma
- C)
Arthritis
- D)
Hypertension
- Answer:
B) Asthma
- Explanation:
Asthma is a respiratory disorder characterized by bronchial inflammation.
- Question:
The process of inhalation is also known as:
- A)
Expiration
- B)
Inspiration
- C)
Perspiration
- D)
Respiration
- Answer:
B) Inspiration
- Explanation:
Inhalation is the act of drawing air into the lungs.
- Question:
Which of the following is a function of the respiratory system?
- A)
Digestion
- B)
Excretion
- C)
Gas exchange
- D)
Reproduction
- Answer:
C) Gas exchange
- Explanation:
The respiratory system facilitates the exchange of oxygen and carbon
dioxide in the body.
- Question:
What is the role of cilia in the respiratory system?
- A)
Gas exchange
- B)
Mucus production
- C)
Filtration of air
- D)
Regulation of airflow
- Answer:
C) Filtration of air
- Explanation:
Cilia help trap dust and other particles, preventing them from entering
the lungs.
- Question:
Which of the following is a part of the upper respiratory tract?
- A)
Larynx
- B)
Bronchi
- C)
Trachea
- D)
Alveoli
- Answer:
A) Larynx
- Explanation:
The larynx is part of the upper respiratory tract, which also includes
the nose, pharynx, and trachea.
- Question:
What is the function of surfactant in the alveoli?
- A)
Facilitates gas exchange
- B)
Prevents alveolar collapse
- C)
Regulates airflow
- D)
Produces mucus
- Answer:
B) Prevents alveolar collapse
- Explanation:
Surfactant reduces surface tension, preventing the alveoli from
collapsing.
- Question:
Which of the following is a disorder of the lower respiratory system?
- A)
Common cold
- B)
Bronchitis
- C)
Sinusitis
- D)
Tonsillitis
- Answer:
B) Bronchitis
- Explanation:
Bronchitis is an inflammation of the bronchial tubes in the lungs.
- Question:
What is the role of the epiglottis during swallowing?
- A
prevent food from entering the trachea during swallowing.
- B)
Produces mucus
- C)
Regulates airflow
- D) Facilitates
gas exchange
- Answer:
A) Prevents food from entering the trachea
- Explanation:
The epiglottis covers the trachea during swallowing to prevent food from
entering.
- Question:
What is true about the pleura?
- A)
It is a muscle involved in breathing.
- B)
It is a membrane that covers the lungs.
- C)
It is a part of the trachea.
- D)
It is involved in gas exchange.
- Answer:
B) It is a membrane that covers the lungs.
- Explanation:
The pleura is a thin membrane that covers the lungs and lines the chest
cavity.
- Question:
Which of the following is a function of the rib cage in breathing?
- A)
Produces mucus
- B)
Regulates airflow
- C)
Facilitates gas exchange
- D)
Protects the lungs
- Answer:
D) Protects the lungs
- Explanation:
The rib cage protects the lungs and helps in the expansion and
contraction of the chest cavity during breathing.
- Question:
What is the role of the intercostal muscles in breathing?
- A)
Produces mucus
- B)
Regulates airflow
- C)
Facilitates gas exchange
- D)
Moves the rib cage
- Answer:
D) Moves the rib cage
- Explanation:
The intercostal muscles help in the expansion and contraction of the rib
cage during breathing.
- Question:
Which of the following statements about respiration is correct?
- A)
Respiration occurs in the lungs only.
- B)
Respiration produces oxygen and glucose.
- C)
Respiration is the same as breathing.
- D)
Respiration releases energy from food.
- Answer:
D) Respiration releases energy from food.
- Explanation:
Respiration is the process by which cells break down food to release
energy.
- Question:
Which of the following is a function of the nasal cavity in respiration?
- A)
Regulates airflow
- B)
Produces mucus
- C)
Facilitates gas exchange
- D)
Filters and warms the air
- Answer:
D) Filters and warms the air
- Explanation:
The nasal cavity filters, warms, and moistens the air before it reaches
the lungs.
- Question:
Which of the following statements about the trachea is correct?
- A)
The trachea is also known as the voice box.
- B) The
trachea has a lining of cilia.
- C)
The trachea is a part of the lower respiratory tract.
- D)
The trachea is involved in gas exchange.
- Answer:
B) The trachea is lined with cilia.
- Explanation:
The trachea is lined with cilia that help trap dust and other particles.
- Question:
What is the role of the bronchioles in respiration?
- A)
Gas exchange
- B)
Mucus production
- C)
Regulation of airflow
- D)
Filtration of air
- Answer:
C) Regulation of airflow
- Explanation:
The bronchioles help regulate the flow of air in and out of the lungs.
- Question:
Which of the following statements about the alveoli is correct?
- A)
The alveoli are the smallest airways in the lungs.
- B)
The alveoli are lined with smooth muscle.
- C)
The alveoli are the site of gas exchange in the lungs.
- D)
The alveoli produce mucus.
- Answer:
C) The alveoli are the site of gas exchange in the lungs.
- Explanation:
The alveoli are tiny air sacs in the lungs where oxygen and carbon
dioxide are exchanged.
- Question:
What is the function of the pleura in the respiratory system?
- A)
Produces mucus
- B)
Facilitates gas exchange
- C)
Regulates airflow
- D)
Helps in the movement of the lungs
- Answer:
D) Helps in the movement of the lungs
- Explanation:
The pleura helps the lungs expand and contract during breathing.
- Question:
Which of the following statements about asthma is correct?
- A)
It is a contagious respiratory disease.
- B)
It is characterized by a persistent cough.
- C)
It is caused by bacterial infection.
- D)
It is a chronic inflammatory disorder of the airways.
- Answer:
D) It represents a chronic inflammatory condition affecting the airways.
- Explanation:
Asthma is a chronic condition characterized by inflammation and narrowing
of the airways.
- Question:
How does emphysema affect the lungs?
- A)
It causes the bronchioles to become inflamed.
- B)
It leads to the destruction of the alveoli.
- C)
It results in the overproduction of mucus.
- D)
It causes the bronchi to narrow.
- Answer:
B) It leads to the destruction of the alveoli.
- Explanation:
Emphysema causes damage to the walls of the alveoli, reducing their
elasticity.
- Question:
Which of the following is a factor that can trigger asthma symptoms?
- A)
Cold weather
- B)
High humidity
- C)
Sedentary lifestyle
- D)
High altitude
- Answer:
A) Cold weather
- Explanation:
Cold air can trigger asthma symptoms by causing airway constriction.
- Question:
What is the primary cause of occupational respiratory disorders?
- A)
Exposure to environmental pollutants
- B) It
helps in the elimination of carbon dioxide from the blood.
- C)
Genetic predisposition
- D)
Viral infections
- Answer:
B) Inhalation of harmful substances at work
- Explanation:
Occupational respiratory disorders are caused by exposure to harmful
substances in the workplace.
- Question:
How does the respiratory system regulate the pH of the blood?
- A)
By adjusting the concentration of oxygen in the blood
- B)
By removing carbon dioxide from the blood
- C)
By producing bicarbonate ions
- D)
By increasing the heart rate
- Answer:
C) By producing bicarbonate ions
- Explanation:
The respiratory system helps regulate the pH of the blood by producing
bicarbonate ions.
- Question:
Which of the following statements about the transport of gases in the
blood is correct?
- A)
Oxygen is mainly transported in the blood bound to hemoglobin.
- B)
Carbon dioxide is mainly transported in the blood as dissolved gas.
- C)
Oxygen is mainly transported in the blood as bicarbonate ions.
- D)
Carbon dioxide is mainly transported in the blood bound to hemoglobin.
- Answer:
A) Oxygen is mainly transported in the blood bound to hemoglobin.
- Explanation:
Oxygen is transported in the blood bound to hemoglobin, while carbon
dioxide is mainly transported as bicarbonate ions.
- Question:
How does the respiratory system respond to high altitudes?
- A)
By increasing the rate of breathing
- B)
By decreasing the rate of breathing
- C) It
leads to an increase in the production of red blood cells.
- D)
By decreasing the production of red blood cells
- Answer:
C) By increasing the production of red blood cells
- Explanation:
At high altitudes, the body produces more red blood cells to carry oxygen
more efficiently.
- Question:
What is the role of the respiratory center in the regulation of
respiration?
- A)
It detects the concentration of oxygen in the blood.
- B)
It controls the rate and depth of breathing.
- C)
It produces mucus to trap dust particles.
- D)
It regulates the flow of air into the lungs.
- Answer:
B) It controls the rate and depth of breathing.
- Explanation:
The respiratory center in the brainstem controls the rate and depth of
breathing in response to changes in oxygen and carbon dioxide levels.
- Question:
How does the respiratory system maintain homeostasis?
- A)
By regulating the pH of the blood
- B)
By controlling the body's temperature
- C)
By removing waste products from the body
- D)
By providing oxygen to the cells and removing carbon dioxide
- Answer:
D) By providing oxygen to the cells and removing carbon dioxide
- Explanation:
The respiratory system helps maintain homeostasis by ensuring a balance
of oxygen and carbon dioxide in the body.
Conclusion
We hope this mock test has helped you assess your knowledge
of breathing and respiration. Remember to review the explanations for each
question to reinforce your understanding of the respiratory system. Best of
luck with your NEET 2024 preparation!
Thank You
Thank you for taking the time to complete our NEET Biology Mock Test for Breathing and Respiration. We wish you success in your NEET 2024 examination and future endeavors in the field of biology and medicine.
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