worksheet 1 (my body)
SUBJCT-SCIENCE
WORKSHEET-1 STD-IV
NAME--------------------------------------------------------- SEC -----------
Q.1. Tick the
correct option.
a)The number of
salivary glands present in our mouth :
i) two
pairs ii) one pair iii) three pairs iv) four pairs
b) The length of
small intestine is approximately________
i) 4 metres ii) 5 metres iii) 7 metres iv) 6 metres
c) The process
in which food materials are broken down into simpler forms is called_____
i)
respiration ii) digestion iii) excretion iv) nutrition
d) The largest
gland in our body is ___________
i) pancreas ii) stomach iii) intestine iv) liver
e)The organ in
which absorption of water takes place
i)large intestine ii)stomach
iii) oesophagus iv) small
intestine
f) Cooking makes
the food ________
i)
digestible ii) tasty iii) soft
iv) all of these
Q.2 Fill in the
blanks
a) The milk
teeth fall one by one between the age of ____________ and __________.
b) If sugar and
bacteria are left on the teeth for a
long time they can cause
________________.
c) The white
outer covering of teeth is known as ______________.
d) The sharp and
pointed teeth used for tearing the food are
known as_______
e) The
approximate length of large intestine is___________.
f)__________
carries the digested food to all parts of the body.
g) We should
drink about __________ glasses of water everyday.
Q.3 Name two of
each:
a) Teeth used
for chewing and grinding the food
i)__________________ ii)___________________
b) Nutrients of
food i)_________________ ii)______________________
c)Organs of
digestive system
i)_____________________ ii)________________
d) Diseases caused
by eating uncovered food
i)
____________________ ii)_________________
Q.4 Solve the
following puzzle
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HELP BOX
Q.7 Draw and
label human digestive system
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