CBSE Class 11 Biology Breathing and Exchange of Gases Quiz 2

1. The maximum volume of air that can be released from the lungs by forceful expiration after deepest inspiration is called the ______.

A Total lung capacity B Vital capacity C Tidal volume D Ventilation rate

2. Which one of the followings is correct regarding larynx?

A It prevents foreign objects from entering the trachea B It houses the vocal cords C It is an organ made of cartilage and connects the pharynx to the trachea D All of these are correct

3. Which of the following statements is true about Trachea in a respiratory system?

A It functions as passages of air to each alveolus B It functions for sound production C It Acts as passage of air to bronchi D It Lowers the surface tension

4. Which of the following statement is true?

A Every 100 mL of deoxygenated blood delivers approximately 4 mL of carbondioxide to the alveoli. B Every 100 mL of oxygenated blood delivers approximately 4 mL of oxygen to the tissues. C Every 100 mL of oxygenated blood delivers approximately 4 mL of carbondioxide to the alveoli. D Every 100 mL of deoxygenated blood delivers approximately 10 mL of carbondioxide to the alveoli.

5. Trachea divides into bronchi at

A 4th thoracic vertebra B 5th thoracic vertebra C 6th thoracic vertebra D 7th thoracic vertebra

6. Aerobic respiratory pathway is also termed as ______ pathway.

A Anabolic B Catabolic C Creatine phosphate D Amphibolic

7. The oxygen dissociation curve is shifted to the right by an increase in ______.

A H+ concentration B PCO C temperature D All of these

8. The maximum volume of air contained in the lung by a full forced inhalation is called

A Vital capacity B Tidal volume C Total lung capacity D Inspiratory capacity

9. Which one of the following is NOT correct?

A The nasal cavity warms and humidifies the air before it enters the lungs B The right lung is composed of three lobes, but the left lung has only two lobes. C Lung volumes and vital capacity measure lung function. D The visceral pleura is in direct contact with the chest wall.

10. Which organ lies in thoracic cavity?

A Heart B Lungs C Pancreas D Both 1and 2