1
Science 4th
CHAPTER NO. 1
(CHARACTERISTICS AND LIFE
PROCESS OF ORGANISMS)
MCQs
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? |
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Ans. |
The
two major group |
s of living things. 1.
Plants |
2.
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? |
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Ans. There are almost
600 muscles in human body.
Almost half of the body weight
is due to muscle. |
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36.
Which gas is providing by
plants to environment? Ans.
Plants provide oxygen to environment. |
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37.
How leaves get water? Ans. Leaves get water from soil
through roots. Roots
absorb water and transport
to other part of plants. |
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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. |
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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. |
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40.
What is the color of muscles? Ans. Muscles are pink or red in color. |
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41.
How muscles work? Ans. Muscles work
in the form of pairs.
When
one muscle contract, the other is expand. |
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