ARMY PUBLIC SCHOOL , CANTT KANPUR
HOLIDAY HOMEWORK FOR CLASS IX SESSION 2017-18
ENGLISH
1. Read the novel ‘Gulliver’s Travels’ part I & II
2. Read a story of any writer of your choice and write the book review in 150
words.
3. Read ‘How I taught my Grandmother to read’, ‘The Brook’, ‘A Dog named
Duke’ and ‘The Road not Taken’ and collect 50 difficult words along with
their meaning from these chapters. Arrange these words in alphabetical
order and note down in your notebook
विषय-ह द
िं ी
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2+
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laLej.k vkidks vPNk yxk vkSj D;ksa \
Sanskrit
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ckyd]
dfo]
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unh
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MATHS
1) PRACTISE 5 QUESTIONS PER DAY IN SEPARATE NOTE BOOK ( 1,2&3 CHAPTER)
2) FRAME 10 WORD PROBLEMS ACCORDING DAILY LIFE EVENTS
3) REPRESENT √11 ON NUMBER LINE BY SQUARE ROOT SPIRAL METHOD ON WHITE SHEET
(ACTIVITY)
4) LEARN AND WRITE ALL IDENTITIES OF POLYNOMIALS
SST
1)
WRITE AN EXPLORATION REPORT ON FRENCH REVOLUTION
SCIENCE
CHEMISTRY
1. Write the differences between :
(a) Evaporation and Boiling
(b) Vapour and Gas
2.Give rasons why aereated bottles are kept under cold water during summers .
3. Why do we wear cotton clothes in summer season .
4.On what principle do hot air balloons work ?
5. “Osmosis is a special kind of Diffusion ‘ Comment.
6. In which state of matter , particle motion is maximum and why ?
7. Why are gases so easily compressible whereas it is almost impossible to compress a
solid or a liquid .
8. Compare the properties of solids, liquids and gases.
9. Which charecteristics of a gas is used in supplying oxygen cylinders to hospitals ?
10. Convert the temperature 45 degree on Celsius Scale to the Kelvin Scale
11. Convert 388 K to the Celsius Scale
12. Why is ice rubbed on the burnt part of the skin ?
PHYSICS
Q1. A train moving with uniform speed covers a distance of 120 m in 2 s. Calculate:
(i) the speed of the train, (ii) the time it will take to cover 240 m.
Q2. Arrange the following speeds in increasing order:
10 m/s,
1 km/min,
18 km/h.
Q3. A train takes 2 h to reach station B from station A, and then 3 h to return from station
B to station A. The distance between the two stations is 200 km. Find:
(i) average speed, (ii) average velocity of the train.
Q4. A car travels first 30 km with a uniform speed of 60 km/h and the next 30 km with a
uniform speed of 40 km/h. Calculate: (i) the total time of journey, (ii) the average speed of
the car.
Q5. A car covers 30 km at a uniform speed of 30 km/h. What should be its speed for the
next 90 km if the average sped for the entire journey is 60 km/h.
Q6. A car starting from rest acquires a velocity 180 m/s in 0.05 h. Find the acceleration.
Q7. A car accelerates uniformly from 18 km/h to 36 km/h in 5 s. Calculate the acceleration
of the car.
Q8. A car moving with a speed of 54 km/h is brought to rest within 10 s by applying
brakes. Find the retardation due to brakes.
Q9. A 150 m long train crosses a bridge that is 850 m long in 100 seconds.
I.
What is the total distance travelled by the train?
II.
What is the speed of the train?
Q10. Consider this situation: A car moves with a velocity of 2 m/s for 10 seconds, and
then its velocity increases to 10m/s in the next 5 seconds. Thereafter its velocity decreases
at a uniform rate until it comes to rest after 10 seconds.
a. Express this entire run of the car on the velocity time graph.
b. From the graph identify the
c. time interval when the car was accelerating
d. Displacement travelled while the car was decelerating
BIOLOGY
1. Prepare a model of plant cell/ animal cell. The model should not exceed a size of
12” by 18”. The model should be interactive i.e. can be in the form of a puzzle, or,
in the form where if an organelle part is moved, the function is visible.
2. Prepare a scrap book/video/ Power point presentation of a biological
phenomenon.Examples—biogeochemical cycles, types of tissues, working of cell
organelles, diversity in plant /animal kingdom, vertebrates, acute/chronic
diseases, inflammation, vaccinations-past & present etc.
3. Revise the given question bank & write the answers:
Q. 1. Who discovered cells, and how ?
Q. 2. Why is the cell called the structural and functional unit of life ?
Q. 3 How do substances like CO2, and water move in and out of the cell ? Discuss. Or
Name the process by which CO2, and H20 move into and out of the cell.
Q. 4. Why the plasma membrane is called a selectively permeable membrane?
.Q. 5. Fill in the gaps in the following table illustrating differences between prokaryotic
and eukaryotic cells.
Q. 6 Can you name the two organelles we have studied that contain their own genetic
material.
Q. 7 If the organisation of a cell is destroyed due to some physical or chemical influence,
what will happen?
Q. 8 Why are lysosomes known as suicide bags?
Q. 9 Where are proteins synthesized inside the cell ?
Q. 10 Make a comparison and write down ways in which plant cells are different from
animal cells.
Q. 11 What would happen if plasma membrane rupture: or breaks down?
Q. 12 What would happen to the life of a cell if there was no Golgi apparatus?
Q.13 Which organelle is known as the "powerhouse of the cell? Why?
.Q.14 Where do the lipids and proteins constituting the cell membrane get synthesized?
.Q.15 How does an Amoeba obtain its food?
Q.16. What is osmosis ?
Q.17 Why are lysosomes known as ‘suicide-bags’ of a cell?
Q.18 Do you agree that a cell is a building unit of organism. If yes, explain why?
Q.19 Why does the skin of your fingers shrink when you wash clothes for a long time?
Q.20 Why is endocytosis found in animals only?
Q.21 A person takes concentrated solution of salt, after sometime, he starts vomiting.
What is the phenomenon responsible for such situation? Explain.
Q.22 Name any cell organelle which is non- membrane.
Q.23 If you are provided with some - vegetables to cook. You generally add salt into the
vegetables during (making process). After adding salt, vegetables release water. What
mechanism is responsible for this?
Q.24 Why are lysosomes also known as ‘scavengers of the cells’?
Q.25 Which cell organelle controls most of the activities of the cell ?
Q.26 Why do plant cells possess large size vacuoles ?
Q.27 How are chromatin, chromatid and chromosomes related to each other ?
.Q.28 How is nucleus different from nucleoid ?
Q.29 Differentiate between rough and smooth endoplasmic reticulum. How is
endoplasmic reticulum important for membrane biogenesis?
VSA
Q. 1. What is the function of leucoplasts?
.Q. 2. Mention one function each of Golgi apparatus and smooth endoplasmic reticulum
(SER).
Q. 3. Why are lysosomes known as suicidal bags?
Q. 4. What will happen, if you put an animal or plant cell into a dilute solution of salt or
salt prepared in water ?
Q. 5. Which chemical molecule carries heredity from parents to offspring ?
Q. 6. Give two examples where the cells constantly keep their shapes changing.
Q. 7. What is a eukaryotic cell ?
Q. 8. What are the most important structures within a nucleus ?
Q. 9. Where does protein synthesis occur in a cell ?
Q. 10. Name the plastid which stores starch, oils and protein granules.
Q- 11. Name the organelle of a cell referred as Power House of cell.
.Q. 12. Who discovered cells in living organism ? Give an example of unicellular organism.
Q. 13. State the full form of ATP.
Q. 14. Name the process in which diffusion takes place through a selective permeable
membrane.
Q. 15. What is a nucleoid?
Q. 16. There are 40 chromosomes in a cell. How many chromosomes will be in the
daughter cell after meiosis ?
.Q. 17. What is a eukaryotic cell?
Q. 18. What are the three major functional regions of cell.
Q. 19. Write the names of cell organelles.
Q. 20. What is a prokaryotic cell?
Q. 21. What is the functional unit of life? Define it.
SA
Q. 1. Name a cell organelle found only in a plant cell and name its type.
Q.2. What is plasmolysis? Under what conditions does it take place?
Q. 3. Name a cell organelle found only in a plant cell and name its types?
Q. 4. (a) What is the difference in the vacuoles found in plant cell and animal cell.
(b) Write the function of Golgi apparatus.
Q. 5. Which organelle of a cell is known as power house of the cell. Why?
Q. 6. (a) Which cell orgenelle detoxify poisons and drugs in liver or vertebrates?
(b) What is nucleoid ?
Q.7 0.9% of NaCl solution is considered isotonic for RBC. IfRBCs are placed in 2% NaCl
solution, what will happen to the cells ? What is such a solution called ?