DAV PUBLIC SCHOOL,HEHAL,RANCHI ASSIGNMENT-I CLASS- IX SCIENCE BIOLOGY CHAPTER- CELL: BASIC UNIT OF LIFE 1- What is cell theory? 2- Differentiate between prokaryotic and eukaryotic cells. 3- Write the chemical composition of plasma membrane. Also write its two functions. 4- Define osmosis. Write two importance of osmosis in plants. 5- Name the following and also write their locations in a cell : a-Nucleic acid b- functional segment of DNA c- energy currency 6- Write three functions of nucleus. 7- Which cell organelle forms lysosome? Why lysosome is called “suicidal bag” of the cell? 8- Give reasons: 1- Plasmolysis occurs in plant cell. 2- Mitochondria is a strange cell organelle. 3- Vacuoles provide turgidity to plant cell. PHYSICS CHAPTER-MOTION 1.Define the following terms:- (a)speed (b) velocity (c) Acceleration (d) uniform Motion 2. Differentiate the followings:- (a) Uniform and Non-Uniform motion (b) Speed and velocity 3. Proof: (a) v=u+at (b) s=ut+1/2at2 4. Define average speed.A train travels some distance with a speed of 30km/ and returns with a speed of 45km/h.Calculate the average speed of the train. 5. A car travelling at 36km/h speeds upto 72km/h in 5 seconds.What is its acceleration? If the same car stops in 20sconds,What is its retardation/ 6.On a 120km track,a train travels the first 30km at a uniform speed of 30km/h.How fast must the train travel the next 90km so as to average 60km/h for the entire trip? 7.What in uniform circular motion? Why is it called accelerated motion? 8.Explain different types of Distance-time graph with examples and graphical presentation. 9.A body is moving uniformly with a velocity of 5m/s.Find graphically the distance travelled by it in 5 sec. 10.A car is moving on a straight road with uniform acceleration.The following table gives the speed of the car at various instants of time: Time(s) 0 10 20 30 40 50 Speed (m/s) 5 10 15 20 25 30 Draw the speed time graph choosing a convenient scale. Determine from it (a)the acceleration of the car (b) the distance travelled by the car in 50sec.
Transcript
DAV PUBLIC SCHOOL,HEHAL,RANCHI
ASSIGNMENT-I CLASS- IX
SCIENCE BIOLOGY CHAPTER- CELL: BASIC UNIT OF LIFE
1- What is cell theory?
2- Differentiate between prokaryotic and eukaryotic cells.
3- Write the chemical composition of plasma membrane. Also write its two functions.
4- Define osmosis. Write two importance of osmosis in plants.
5- Name the following and also write their locations in a cell : a-Nucleic acid b- functional segment of DNA c- energy currency 6- Write three functions of nucleus.
7- Which cell organelle forms lysosome? Why lysosome is called “suicidal bag” of the cell?
8- Give reasons:
1- Plasmolysis occurs in plant cell.
2- Mitochondria is a strange cell organelle.
3- Vacuoles provide turgidity to plant cell. PHYSICS CHAPTER-MOTION
1.Define the following terms:- (a)speed (b) velocity (c) Acceleration (d) uniform Motion 2. Differentiate the followings:- (a) Uniform and Non-Uniform motion (b) Speed and velocity 3. Proof: (a) v=u+at (b) s=ut+1/2at2 4. Define average speed.A train travels some distance with a speed of 30km/ and returns with a speed of 45km/h.Calculate the average speed of the train. 5. A car travelling at 36km/h speeds upto 72km/h in 5 seconds.What is its acceleration? If the same car stops in 20sconds,What is its retardation/ 6.On a 120km track,a train travels the first 30km at a uniform speed of 30km/h.How fast must the train travel the next 90km so as to average 60km/h for the entire trip? 7.What in uniform circular motion? Why is it called accelerated motion? 8.Explain different types of Distance-time graph with examples and graphical presentation. 9.A body is moving uniformly with a velocity of 5m/s.Find graphically the distance travelled by it in 5 sec. 10.A car is moving on a straight road with uniform acceleration.The following table gives the speed of the car at various instants of time: Time(s) 0 10 20 30 40 50 Speed (m/s) 5 10 15 20 25 30 Draw the speed time graph choosing a convenient scale. Determine from it (a)the acceleration of the car (b) the distance travelled by the car in 50sec.
Chemistry
ENGLISH
Q.1. Answer the following questions in about 30-40 words.
(i) Why was Margie doing badly in geography?
(ii) What had once happened to Tommy’s teacher?
(iii) How does Tommy describe the old kind of school?
(iv) How does Evelyn hear music?
(v) When and how did Bismillah khan get his big break?
(vi) Where did Bismillah khan play the shehnai on 15th
august 1947? Why was the event
historic?
(vii) Why did Toto run with the dish of pullao?
(viii) What was the doubt that the poet had?(The Road Not Taken)
(ix) Did the poet make a right choice?(The Road Not Taken)
(x) How do we make wind our friend?(Poem-wind)
(xi) Why should the earthly people build strong houses?
(xii) What are the things the child sees on his way to the fair?
(xiii) What was the condition of the child after he lost his parents?
(xiv) Why was Toto’s presence kept a secret?
(xv) How did Toto nearly succeed in boiling himself alive?
Q.2. Write an article in about 120-150 words on topic –‘Books are Our Best Companions’
Q.3. You are Manas/Mansi Raj.You celebrated your sixteenth birthday with a lot of pomp and
show with your family ,friends and relatives.Write your happy experiences in your diary in
about 120-150 words.
Q.4. Mohan/Mohini decided to write a story. Using the following beginning line, complete the
story in about 150-200 words.
Q.5. Rearrange the following words and phrases into a meaningful sentence.
Q.6. Read the following conversations and complete the passage given below.
Principal: Why are you seeking admissions to this school?
Arpita: Your school has talented teachers.
Principal: To which stream do you wish to take admission?
Arpita: I wish to take admission in the science stream.
The Principal asked Arpita (a)___________Arpita replied that (b)____________The Principal
then wanted to know(c)____________Arpita told him (d)____________in the science stream.
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MATHEMATICS
Social Science
1. When did the French Revolution begin?
2. Who was the ruler of France during the revolution?
3. What was taille?
4. Name the tax paid by the commoners to the Nobility.
5. Who were the Clergy?
6. Who wrote the book –“Two Treaties of the Government “?
7. What was the Estate General?
8. What is the latitudinal extent of India?
9. In which hemisphere does India lie?
10. Name the states through which the Tropic of Cancer passes?
11. What is the total geographical area of Indian land mass?
12. In which year did Suez Canal open?
13. Name the states of India ,sharing border with Pakistan.
14. Define Democracy.
15. When did Pervez Musharraf come to power in Pakistan?
16. What does referendum mean?
17. Why China can’t be called a democratic country?
18. What is the name of the Chinese Parliament?
19. What is – ZANU-PF?
20. What are the four main factors of production?
21. What is the standard unit of measuring land area?
22. What is working capital?
23. Write the composition of population of Palampur.
24. Mention the transport service available at Palampur.
25. What is meant by Green Revolution ?
DAV PUBLIC SCHOOL,HEHAL,RANCHI
ASSIGNMENT-II CLASS- IX
SCIENCE
BIOLOGY
1- 1- Define diffusion. 2- Write the full form of DNA and RNA. 3- -Expand ATP. Which cell organelle synthesizes ATP? 4- What are plastids? Name different types of plastids. 5- Describe the structure and functions of Golgi complex. 6- Explain the structure of Nucleus. 7- 7-Give reasons:
1-Bacterial cell is a prokaryotic cell. 2-Plant cell can survive in a diluted environment.
8- 3-Lysosomes are called the scavenger of a cell. 9- What is membrane biogenesis? Which cell organelle is involved in this process? 10- Name the cell organelles in which the following structures are present: 11- Grana, cisternae and Oxysome. 12- 10-Explain hypotonic and hypertonic solution with example.
PHYSICS CHAPTER-MOTION 1. Define the following terms:-
(a) Uniform acceleration and Non-uniform acceleration (b)Vector quantity and scalar quantity 3. Define Average speed. A train travels at 60km/h for 0.52h,at 30km/h for the next 0.24h and at 70km/h for the next 0.71h.What is the average speed of the train? 4. Alka jogs from one end A to the other end B of a straight 250m road in 1min and 40sec.She then turns around and jogs 50m back to point C in 30scopnds.Calculate average speed and average velocity from (i)A to B and (ii)A to C. 5.A body starts rolling over a horizontal surface with an initial velocity of 0.5m/s2. Due to friction,its velocity decreases at the rate of 0.05m/s2.how much time will take for the body to stop? 6.Define acceleration.A ship is moving at a speed of 56km/h. One second later,it is moving at 58km/h.What is its acceleration? 7.Define uniform circular motion.How is it different from uniform linear motion? 8. Explain speed-time graph with examples and their graphical presentation. 9. A car is moving on a straight road with uniform acceleration.The following table gives the speed of the car at various instants of time: Time(s) 0 10 20 30 40 50 Speed (m/s) 10 20 30 40 50 60 Draw the speed time graph choosing a convenient scale. Determine from it (a)the acceleration of the car (b) the distance travelled by the car in 50sec
10.What is the conclusion (a) the distance-time graph is parallel to the time ax (b) the distance-time graph is straight line passing through origin.
CHEMISTRY
ENGLISH Q.1. Answer the following questions in about 30 – 40 words.
(i) How old are Margie and Tommy?
(ii) What did Margie write in her dairy?
(iii) What do you think a telebook is?
(iv) How old was Evelyn when she went to the Royal Academy of Music?
(v) Who helped Evelyn to continue with music?
(vi) Why did Bismillah Khan refuse to start a shehnai school in USA?
(vii) Why did Aurangzeb ban the playing of the pungi?
(viii) What is the poet‟s dilemma in poem “The Road Not Taken”?
(ix) Who are disturbed by wind?
(x) What does the wind do with the books?
(xi) What is the message of the poem- “The Road Not Taken?”
(xii) How was the child lost in the fair ?( The Lost Child)
(xiii) Who helped the child after losing his parents?( The Lost Child)
(xiv) How does Toto come to grandfather‟s private zoo ?( The Adventures of Toto)
(xv) Why did grandfather sell back Toto to the Tonga driver?( The Adventurers of Toto)
Q.2. While going home you come across many children on the road with begging bowls in
their hands. You are shocked and disgusted at this unflattering picture of the country,
which boasts of being a major economy in the world. Record your experience in your
diary.( Word limit 120-150)
Q.3. You are Prateek/ Prerna . You are very much impressed by The Prime Minister's cleanliness
campaign- Swachha Bharat Abhiyan. Write an article in about 120-150 words to share
your own ideas on „Clean India Campaign'.
Q.4. Mahesh wrote only few lines and couldn‟t complete his story that he wanted. Taking help
from the beginning line, write the complete story. (Word limit 150-200)
A woodcutter was chopping down trees on the bank of a river. His hands were so much
wet with his sweat that he lost his grip over his axe …………………..
Q.5. Change the following sentences into Indirect Speech:
(i) He said to me,” Please take out your book.”
(ii) She said to me ,” Open the window.”
(iii) He said , “Where is your father?”
(iv) Our teacher said,” The earth revolves around the sun.”
Q.6. Rearrange the following words and phrases to form meaningful sentences.
