1. Which is not a part of the small intestine?   duodenum   jejunum   ileum   caecum   Hint Half-n-half Clue   2. Which of the following is the common passage for the food eaten and the air breathed?   larynx   esophagus   trachea   pharynx   Half-n-half Clue   3. The part of the tooth outside the socket of the jaw is known as the crown.   True   False   4. The stomach is lined with mucous membrane.   True   False   5. The mucus in the stomach protects the stomach tissues from the action of enzymes.   True   False   6. There are _______ pairs of salivary glands present in the mouth.   2   3    4    6   Half-n-half Clue   7. The part of the tooth inside the socket of the jaw is known as the _______.   crown   enamel   dentine   root   Half-n-half Clue