1. How many teeth does an adult human being normally have?   16   20   30   32   Hint Half-n-half Clue   2. Which is not a part of the small intestine?   jejunum   duodenum   ileum   caecum   Half-n-half Clue   3. The minute projections present in the small intestine are called cilia.   True   False   4. A tooth is made up of a solid bony tissue known as _______.   crown   dentine   enamel   root   Half-n-half Clue   5. There are _______ pairs of salivary glands present in the mouth.   2   3    4    6   Half-n-half Clue   6. Which of the following is the common passage for the food eaten and the air breathed?   larynx   esophagus   trachea   pharynx   Half-n-half Clue   7. The part of the tooth inside the socket of the jaw is known as the _______.   crown   enamel   root   dentine   Half-n-half Clue