ICSE: CLASS 9 : TEST PAPER: Digestive System  (Part 1)                                                     MM25

1.Name the following
a.Hardest substance in the body
b An enzyme in saliva.
c.Opening of stomach into intestine.
d Part of tooth exposed above gum.
e.The broad sharp cutting teeth                                                                                              5
2.Write true /false and correct the false statement by changing either first or last word only.
a.Saliva is slightly alkaline.
b.Soft connective tissue in central space of tooth is called dentine.
c.Bone like structure fixing the tooth root is called enamel
d.Premolars are also called wisdom teeth.                                                                              5
e.Human teeth are homodont
3.Match the colums
1.Gastric juice       a.cutting edges
2.Incisors               b.pepsin
3.premolars           c.tearing the food
4.canines               d.grinding crushing.
5.molars e.20/teeth/                                                                                                               5
4.Define
a. Digestion.
b.Peristalsis                                                                                                                            2
5.What is function of HCl acid in stomach?                                                                             2
6.What is the dental formula of normal human adult?                                                               1
7.mention the reflexes which occur when a person chews and swallows food.                          2
8.name three salivary glands and their location.                                                                       3.

BY: ASHWANI KUMAR .BIO TEACHER AT VIGYAN TUTORIALS.PATEL NAGAR PHAGWARA 9646388266