1. Identify diaphragm in this diagram.   B   C   D   E   Hint Half-n-half Clue   2. Exchange of air occurs in _______ which are also known as 'air sacs'.   Bronchioles   Bronchi   Alveoli   Alveolar ducts   Half-n-half Clue   3. Which cells of the blood carry oxygen to different parts of the body?   Red blood cells   Larynx   Epiglottis   False   Half-n-half Clue   4. Complete the equation: Glucose + Oxygen = _______ + Water + CO2   Energy   None of these   Sucrose   Starch   Half-n-half Clue   5. True or False: Breathing through the mouth is considered as good as breathing through the nose.   True   False   6. What is the leaf-like structure which prevents the entry of food into respiratory passages?   Epiglottis   Larynx   Pharynx   Tongue   Half-n-half Clue   7. Which part of the respiratory tract is also known as the voice box?   Pharynx   Epiglottis   Larynx   Trachea   Half-n-half Clue