1. True or False: Two-layered membrane which covers the lungs is known as pericardium.   True   False   2. Which cells of the blood carry oxygen to different parts of the body?   Red blood cells   Larynx   False   Epiglottis   Hint Half-n-half Clue   3. True or False: Trachea contains 16-20 'C'-shaped cartilaginous rings.   True   False   4. Exchange of air occurs in _______ which are also known as 'air sacs'.   Alveoli   Bronchi   Alveolar ducts   Bronchioles   Half-n-half Clue   5. True or False: Exhalation and inhalation of air is known as "cellular respiration".   True   False   6. Identify bronchus in this diagram.   A   B   C   D   Half-n-half Clue   7. Write the correct sequence of the pathway through which air travels after entering the body. A. Larynx, pharynx, trachea bronchioles B. Pharynx, larynx, trachea, bronchioles C. Pharynx, larynx, bronchioles, trachea D. Pharynx, trachea, larynx, bronchioles   A   B   C   D   Half-n-half Clue