1. There are _______ pairs of salivary glands present in the mouth.   2   3    4    6   Hint Half-n-half Clue   2. The stomach is lined with mucous membrane.   True   False   3. The large intestine is broader and longer than the small intestine.   True   False   4. How many teeth does an adult human being normally have?   16   20   30   32   Half-n-half Clue   5. The surface of the crown of the tooth is covered with a strong protective layer known as the _______.   cavity   enamel   dentine   root   Half-n-half Clue   6. Which is not a part of the small intestine?   ileum   duodenum   caecum   jejunum   Half-n-half Clue   7. Which of the following is the common passage for the food eaten and the air breathed?   esophagus   pharynx   trachea   larynx   Half-n-half Clue