1. Identify diaphragm in this diagram.   B   C   D   E   Hint Half-n-half Clue   2. 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   3. True or False: Two-layered membrane which covers the lungs is known as pericardium.   True   False   4. Exchange of air occurs in _______ which are also known as 'air sacs'.   Alveolar ducts   Alveoli   Bronchi   Bronchioles   Half-n-half Clue   5. Complete the equation: Glucose + Oxygen = _______ + Water + CO2   Energy   Sucrose   None of these   Starch   Half-n-half Clue   6. What is the leaf-like structure which prevents the entry of food into respiratory passages?   Epiglottis   Larynx   Tongue   Pharynx   Half-n-half Clue   7. Identify bronchus in this diagram.   A   B   C   D   Half-n-half Clue