REVISION
ON ORGAN SYSTEM AND FOOD AND HEALTH
A. CHOOSE THE CORRECT OPTION
.
1. Different organs work together to
a. form a line. b. form a system
.c.
bind the body. d. all of these
2. A human body has a total number of
a. three organ system. b.
four organ
system . c. seven
organ system. d. six organ system.
3. In the mouth, food mixes with saliva to form
a. sucrose. b. glucose.
c.
fructose. d. acid.
4. Exhaled air is rich in
a. oxygen. b. nitrogen.c.
carbon dioxide. d. sulphur dioxide.
5. The heart, blood, and blood vessels make up the
a. digestive system.
b. excretory system. c. nervous system. d. circulatory system.
6. The kidneys, skin and lungs are related to
a. digestive system. b. excretory system . c. nervous system. d.
circulatory system
7. To remain strong and
healthy
a. eat one kind of a food. b. eat a
variety of food everyday .c. eat only proteins. d. have no fat.
8. The
food that contains all the nutrients needed by our bodies in the right amount is
a. poor diet. b. rich diet
.c.
balanced diet. d. correct diet.
9. Sugars
are
a. simple carbohydrates. b. complex carbohydrates.c.
proteins. d. fats.
4. Starches are
a. simple carbohydrates. b. complex carbohydrates.c.
proteins. d. fats.
5. Egg yolk and dark green vegetables are a rich source of
a. calcium. b. iron
.c.
vitamins. d. proteins.
B. FILL IN THE BLANKS
1. The heart has ______ pumps.
2. People use an _____ if they have
breathing disorders.
3. ________ carry impure blood whereas
______ carry pure blood.
4. The brain, spinal
cord,
and the vast network of nerves form the
____.
5. The two kidneys are made up of
tiny filters called _____.
6. Lack of essential nutrients called
________.
7.________ are foods which give us
energy.
8. Deficiency of iron causes
__________.
9. Saliva is produced by _________
glands located
in the mouth.
10. Vitamin D, along with ______________
and ______________,
makes our bones and teeth strong.
11. ______________ adds bulk to our daily
diet.
12. People are born with about
______________ taste buds.
C.TICK THE CORRECT ANSWER
1. The kidneys, skin, and the lungs are
all parts of the circulatory/ excretory system.
2. The red colour of
the blood is due to the presence of oxygen/haemoglobin.
3. The rate of breathing is about 16/24
per
minute when we are awake.
4. In the stomach/oesophagus,
the food particles are mixed with gastric juices.
5. The heart pumps 72/90
times
in a minute
6. Kendriya Bhandars/Khadi Gram Udyogs are
grocery shops run by the government.
7. Cereals like ragi and
jowar are
rich in minerals/
proteins.
8. Eggs are wiped with a wet/oiled cloth
to keep them fresh for a
long time.
9. Vitamin C/D keeps gums healthy and
helps the body to absorb iron.
10. Famine / drought is a situation
where there is a severe shortage of food.
D.WRITE A SHORT NOTE ON-
§Vitamins and minerals
§Carbohydrates
§Respiratory system
§Excretory system
§Nutrients
E. ANSWER THE FOLLOWING:
1.What is a balanced diet?
2.Name some methods of preserving food?
3.What are atrium and ventricle?
4.What are nephrons?
5.What happens when food reaches the
small intes
tine?
6.Why does food get spoilt?
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