Question

CLASS IV
G.SCIENCE
TOPIC: TEETH AND MICROBES
ASSIGNMENT NO: 2
Q-1 FILL IN THE BLANKS
a) A tooth has__ _, neck and_ parts.
b) A tooth has
_ and _
layers.
- results in bad breath, bleeding of gums and indigestion.
d) Eating too many_ causes tooth decay.
e) A new born baby has _ teeth.
f) Milk teeth are also called
_mineral and vitamin
are important for healthy
teeth.
h) Brush your teeth
and
before going to bed.
- your mouth after every meal.
j) The four chisel shaped teeth at the front of each jaw are called
k) Disease causing microbes are called
_ is the disease caused by protozoa.
i)
-
Q-2 WRITE ONE WORD ANSWER
a) Teeth which is used to bite our food.
b) The outer cover of a tooth.
c) The soft part present inside the dentine.
d) The part of tooth present inside the gum.
e) The teeth used to tear the food.
f) The hardest substance present in our body.​

Answer 1

a) crown,  root

b) enamel,DENTIN

c) blisters

d) sweets

e) zero (babies are born without teeth)

f)Deciduous teeth or baby teeth

g) vitamin D and calcium

h) in the morning

i)rinse

k)bacteria

l)Entamoeba gingivalis

Q2

a)incisors

b)enamel

c)pulp

d)root

e)Canines

f)enamel

hope it helps

Answer 2

Answer:

fill in the blanks .1. a person how treats teeth and gums