Class 4th Notes For Ch 1 Science For Punjab Education Foundation School
CH NO. 1
(CHARACTERISTICS & LIFE PROCESS OF ORGANISMS)
Science 4th
1. Which statement
is correct for all the vertebrates:
(a) |
have fur |
(b) |
have more than four legs |
(c) |
have backbone |
(d) |
can fly in air |
2. Which one of the following is a non-flowering plant?
(a) |
apple |
(b) |
rose |
(c) |
mango |
(d) |
pine |
3. Which part of a plant
is absent in non-flowering plants:
(a) |
root |
(b) |
seed |
(c) |
flower |
(d) |
leaf |
4. Fish are vertebrates and swim in water.
What is
true about fish:
(a) |
have fur on the body |
(b) |
have feather and tail |
(c) |
have four legs |
(d) |
have fins and tail |
5. Many plants
produce fruits:
(a) |
to produce seed |
(b) |
to produce food for seed |
(c) |
to store water for seed germination |
(d) |
to stop seeds from dispersal |
6. What is
common among butterfly, bird and bat?
(a) |
teeth |
(b) |
hair |
(c) |
bones |
(d) |
wings |
7. New plants
are formed from:
(a) |
roots |
(b) |
leaves |
(c) |
stem |
(d) |
flowers |
8.
anchor the plant
in soil:
(a) |
stem |
(b) |
leaves |
(c) |
root |
(d) |
fruit |
9. The function
of flower is:
(a) |
food formation |
(b) |
formation of oxygen |
(c) |
water |
(d) |
formation of seed |
10. Plant
help in manufacturing of food and production of:
(a) |
food |
(b) |
water |
(c) |
oxygen |
(d) |
carbon dioxide |
11.
Leaves are usually in color:
(a) |
yellow |
(b) |
blue |
(c) |
green |
(d) |
pink |
12. Water and minerals transport to leaves
through:
(a) |
stem |
(b) |
roots |
(c) |
flower |
(d) |
branches |
13. Plants
absorb minerals
and water through:
(a) |
leaf |
(b) |
roots |
(c) |
stem |
(d) |
flower |
14.
There are almost
muscles in human body:
(a) |
300 |
(b) |
500 |
(c) |
600 |
(d) |
800 |
15. In smiling how much muscles are needed:
(a) |
17 |
(b) |
14 |
(c) |
21 |
(d) |
28 |
16. When one muscle contracts and other will :
(a) |
contract |
(b) |
expand |
(c) |
do not change |
(d) |
move |
17. Food passed
through digestive tube due to:
(a) |
muscles |
(b) |
heart |
(c) |
stomach |
(d) |
kidney |
18. Which of the following help in movement
between joints:
(a) |
heart |
(b) |
bones |
(c) |
muscles |
(d) |
arm |
19. Which of the following help in digestion:
(a) |
heart |
(b) |
bones |
(c) |
muscles |
(d) |
lungs |
20.
work 24 hours like as pump:
(a) |
brain |
(b) |
stomach |
(c) |
heart |
(d) |
muscles |
21. The exchange of gases between blood and air
occur in:
(a) |
lungs |
(b) |
heart |
(c) |
brain |
(d) |
liver |
22. The total number of bones in human body is:
(a) |
204 |
(b) |
205 |
(c) |
206 |
(d) |
207 |
23.In bones blood is formed in
(a) |
calcium |
(b) |
phosphorus |
(c) |
iron |
(d) |
bone marrow |
24. Which teeth are used for cutting and piercing
of food:
(a) |
canines |
(b) |
molars |
(c) |
pre molar |
(d) |
molars |
25. Which teeth are used for chewing and grinding of food:
(a) |
incisors |
(b) |
pre molar |
(c) |
molar |
(d) |
both b and c |
26. Which teeth are used for chewing
and grinding of food:
(a) |
incisors |
(b) |
canines |
(c) |
pre molars |
(d) |
molars |
27. The biggest man made forest in the world is:
(a) |
changa manga |
(b) |
murree |
(c) |
kaghan forest |
(d) |
ziarat
forest |
28. The example
of flowering plants
is:
(a) |
moss |
(b) |
fern |
(c) |
apple |
(d) |
juniper |
29. The example
of invertebrate is:
(a) |
cockroach |
(b) |
cat |
(c) |
frog |
(d) |
fish |
30. The example
of vertebrates is:
(a) |
cockroach |
(b) |
butterfly |
(c) |
earth worm |
(d) |
pigeon |
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SHORT QUESTIONS |
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1. What are the two major groups
of living things? Ans. The two major groups of living things. (1)Plants (2) |
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Animals |
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2. Why are plants essential? Ans. Plants are essential because they take in carbon dioxide and give out oxygen. We need oxygen for breathing. |
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3. How can we differentiate between plants and animals? Ans. Animals cannot make their own food
but plants can make their own food. |
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4. How do leaves get water? Ans. Plants absorb water through roots.
This water reaches to leaves
through stem. |
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5. What is Venn diagram showing sides. |
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Similarities |
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6. What are two major groups |
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7. Write any
three characteristics of living
things. |
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Ans. things of their kinds. |
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8. Difference between Plants and animals: |
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Plants |
Animals |
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1. Plants make their own food. |
Animals depend on plants and other animals for their food. |
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2. Plant cannot move from one place to another place. |
Animals can
move from one place to another place. |
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3. Plants are green color. |
Animals are of various colors |
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9. Difference between vertebrates and invertebrates: |
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Vertebrates |
Invertebrates |
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The animals
having backbone are called vertebrates Examples:
fish, frog, cat etc. |
The animals
having no backbone are called invertebrates.
Examples:
cockroach, butterfly,
starfish, millipede. |
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10. Write the types of teeth? Ans. There are four types of teeth: 1) incisors 2) canines 3) premolars |
4) molars |
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11. What are the functions of teeth? Ans. 1) incisors are used for biting and cutting food. 2) Canines are used for piercing and tearing food. 3) Premolars are used for tearing and crushing. 4) Molars are your
largest teeth.
Their function
is similar to |
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that of the premolars to grid, tear and crush food. |
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12. What functions do bones and muscles
perform together? Ans. Bones
and muscles together help us to move hands, arm, and legs. Due to these movements we can sit, walk, run and
jump. |
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13. What does a tiger do with its canines? Ans. A tiger eats meat or flesh
of other animals. It uses its canines for piercing the
prey. |
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14. What does a rat
do with its incisors? Ans. A rat eats seeds, nuts, fruits,
meat, plants etc. it uses
its incisors for biting food or killing prey. |
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15. Which three body parts
are in pairs? |
16. Do all the teeth have the same shape? Ans. No, all the teeth do not have the
same shape. |
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Ans. Eyes, ears and
hands are in pairs. |
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17. How many
teeth does a human being have? |
18. How many
vertebras
are in your backbone?
Ans. There are 33 vertebras
in my backbone. |
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Ans. There are 32 teeth in human. |
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19. Observe the lungs of a
goat and touch them. Ans. Lungs feel
soft like a sponge in touch. |
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20. Why are the lungs spongy? Ans. Lungs are spongy because
there are many alveoli inside the
lungs. |
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21. What will happen if air is filled into the lungs through a windpipe? Ans. If air is filled into the lungs through windpipe, the lungs get bigger and
oxygen from the
air passes into blood. |
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22. What is the name of the bones? |
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Ans. 1) skull 2) ribs 3) bones of the hand |
4) bones of the leg |
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23. What are conifers? Ans. Conifers are found in the northern area of
Pakistan. Conifers are very important
for our economy its wood is used for making furniture, construction materials and ornamental things. It is
also used to make paper. The seeds of some conifers are used as day fruit such as
pine nut (chilghoza). |
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24. Define biodiversity? Ans. The number of various types of living things found at a particular place is
called biodiversity. |
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25. Which factors cause extinction
of species? Ans. The existence of many living things is in danger
due to many factors such a destruction of habitat, change of climate, increase of temperature on earth. |
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26. Which is the largest man made forest
in world? Ans. Changa Manga is the largest man-made forest in the world. |
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27. What is skeleton? Ans. All the bones are united
with one another at the joints forming a frame is called skeleton. |
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28. Define joint? Ans. The place where two bones
are joined together is
called joint. |
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29. What is the function of lungs? And. Lungs help in the exchange of gases between
blood and air. |
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30. Write function of heart. Ans. The heart works like a pump through our life. The muscles of the heart contract and relax. It circulates blood all over the body through blood vessels. |
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31. Write the function of stomach? Ans. The stomach is a bag like organ. It is present on the left side below the heart. It is the biggest part of digestive track. It secretes digestive juice. The muscles of stomach move the food and the digestive juice digest the food. |
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32. How bone moves? Ans. When
muscles contract, they pull various parts of our bones.
Due to this bone moves at the joint. |
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33. Write the function of brain. Ans. The brain is the most important part of our body. It is present within our skull. It controls the function of our body. It collects information from different part
of our body and decides the response of body. |
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34. Write importance of flower. Ans. The flowering plants have beautiful flowers the flowers are of different sizes and colors. Fruits and seeds are formed from the flowers. |
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35. How much muscles are present
in human body? |
Ans. There are almost 600
muscles in human body. Almost half of the body weight is due to muscle. |
36. Which gas is providing by plants to environment? Ans. Plants provide oxygen
to environment. |
37. How leaves get water? Ans. Leaves get water from
soil through roots. Roots absorb water and
transport to other
part of plants. |
38. What is the function of bones? Ans. Bones
support the body and help
us in movement from one place to another place. Bones also maintain
a specific shape. Some bones
in our body have bone have bone marrow that forms blood. |
39. When we breathe, which part of our body filled with air? Ans. When
we breathe, lungs
filled with air. During breathing air enters
our lungs through nose and wind
pipe. |
40. What is
the color of muscles? Ans. Muscles are pink
or red in color. |
41. How muscles work? Ans. Muscles work in the form of pairs. When one muscle contract, the other
is expand. |