Holidays Homework Assignments Dec – 2018

Class – XII Subject: English

Assignment No. 1

1. Novel – Give a brief character sketch of Griffin.

2. Answer the following questions in detail:

a) What are the similarities in the lives of Bama and Zitkalasa though they belong to different

cultures?

b) What lapses on the part of the police and the prison authorities helped Evans to escape from the

police?

3. Answer the following questions in detail:

a) Contrast Sophie‟s real world from her fantasies.

b) How did Gandhi use non-violence and civil disobedience at Champaran to achieve his goal.

4. You are Amit, Head boy of your school (Zenith Public School, Lucknow). Write a notice for your

school notice board calling for entries from desirous students for Britannia Quiz Contest – Preliminary

round to be held in your school.

5. You are Suraj of Greater Kailash. Your father wants you to draft a formal invitation to be sent on the

occasion of your sister, Anita‟s marriage. Prepare the invitation.

6. You bought a Sony colour television from Ram Electronics, Model Town, Delhi. The television

worked well for a few months but it then started giving trouble. Write a letter to the Manger, service

section, Sony India Ltd. complaining about television set.

7. Dance, as shown in some reality shows on T.V. seems to be a mix of gymnastics and P.T. exercises.

India has a rich tradition of classical and folk dances. Write article on the need to have reality show

exclusively based on Indian classical dances.

Assignment No. 2

1. Novel – Give a brief character sketch of Dr. Kemp.

2. Answer the following questions briefly:

a) Describe the tigers created by Aunt Jennifer. What do they symbolize?

b) What happens to Aunt Jennifer‟s tigers when she is dead?

c) Why does Keats associate grandeur with the might dead?

d) What makes human beings love life in spite of troubles and sufferings?

e) What is the „sadness‟ that the poet refers to in the poem „Keeping Quiet‟?

f) According to Keats, what lesson can human beings learn from nature.

3. You are Neeraj Rai, Principal, Vasant Public School Pune. Your school has started a music department.

Write a letter to the Manager of Melody House, supplier of musical instruments placing an order for

musical instruments for the school.

4. Bal Vidya Public School, Bhilai urgently requires a post graduate teacher to teach Political Science for

which they have placed an advertisement in „The Bhilai Express‟. You are Sanjay from 21 Vasant

Marg, Bhilai. Draft a letter applying for the post.

5. You are Alia, Head girl of your school. You are deeply disturbed by the rising cases of aggressive

behaviour of students in your school. You decide to speak during the morning assembly about it. Write

a speech on Indiscipline in schools.

Assignment No. 3

Solve first sample paper of 100 marks in one go.

Subject: Political Science

Assignment No. 1 1. In which year, did V.P. Singh come into power?

2. Which parties supported the National Front Government from outside?

3. Who was the Head of Coalition Government from year 1999 to 2004?

4. Mention any two demands of Bhartiya Kisan Union.

5. Who led the Narmada Bachao Andolan?

6. Describe any three elements of growing consensus among most of the political parties of India after

1989.

7. When was the Mandal Commission setup? Describe any two recommendations of this Commission?

8. Describe the process of Goa‟s liberation and becoming a state of the Indian Union.

9. What are the various positions on the issue of regional autonomy for Kashmir? Which of these do you

think are justifiable? Give reasons for your answer.

10. The Assam Movement was a combination of cultural pride and economic backwardness. Explain?

11. Explain any six factors which led to the popularity of Indira Gandhi‟s Government in early 1970‟s.

12. Write a short note on:

a) India‟s nuclear policy

b) Consensus in foreign policy matters.

13. Enumerate any three principles of Nehru‟s Foreign Policy.

14. Asses the outcomes of the early phase of planned development in India.

15. What is meant by security? Evaluate the role of any four new sources of threat to security?

Assignment No. 2 1. What is meant by term „Defection‟? 2. What do you mean by Plan budget? 3. What is meant by „Syndicate‟? 4. Whom would you identify with the following slogans / phrases:

a) Jai Jawan, Jai Kisan b) Indira Gandhi c) Garibi Hatao

5. How fourth general election jolted the Congress Party? 6. The phrase „Aaya Ram, Gaya Ram‟ signifies which concept? Explain its impact on the Indian Political

System? 7. How does the Planning Commission discharge its functions? 8. Explain composition and function of Niti Aayog. 9. What was Green Revolution? Examine positive and negative consequences of Green Revolution? 10. Explain the consequences of Partition. 11. When and where was the organization „Dalit Panthers‟ formed? Describe its activities. 12. Describe any six factors which made the farmers‟ movements run by Bhartiya Kisan Union as the most

successful popular movement. 13. Describe the Composition of UN Security Council. What is major difference in the privileges given to

its permanent & non permanent members? 14. Analyze common problems of South Asian Countries. 15. Why is the decade of sixties labeled as a “dangerous decade”?

Subject: Physical Education

Learning work. Learn the following Assignment in detail during holidays.

1. Learn the flow chart of various Committees required for conducting sports tournament.

2. List down the various types of tournaments knock out as well as league.

3. Define intramural and extramural matches.

4. Define seeding and Bye.

5. Prepare a fixture of 19 teams as knockout system.

6. Write the concept of Sport Medicine.

7. Write about sports injuries and their classification, causes and prevention

8. Define first aid and its objectives.

9. What does PRICED stand for?

10. What is Projectile, Trajectory and its influencing factors & application in sports?

11. Define Aerodynamics and its basic forces.

12. What is friction, its types and its application in sports?

13. What do you mean by Axis and Planes?

14. Write about the different body movements such as Flexion, Extension, abduction and adduction.

15. What are the major muscles involved in Running, jumping and throwing?

16. Define Psychology and sports Psychology. Write the importance of sports psychology in the field of

sports.

17. What do you mean by coping strategies and its basic types?

18. Define the types of Personality by Jung & Sheldon and explain the dimensions of a good personality.

19. What do you mean by exercise adherence and benefits of exercise

20. Write the meaning of aggression in sports. Explain its different types.

21. Define strength and explain the methods of developing strength.

22. Write a brief note on interval and Fartlek training method.

23. Write about Acceleration rims and pace races.

24. Write in detail the circuit training method.

25. What is impact of high altitude on the performance of sports persons?

Written work

Completion of Project (Practical file) for Final Practical exam as per the guidelines & instructions given in

class.

(a) AAHPER administration of all items.

(b) Senior citizen fitness test of any five members.

(c) Any one game of your own choice mentioned in XII syllabus.

Marking of ground, Fundamental skills Rules and terminologies.

Subject: Economics

Assignment – II

1. Define Variable Stock?

2. What are Demand Deposits?

3. If MPC is 0.75, calculate the value of Multiplier.

4. Define Marginal Propensity to save.

5. Give reasons and explain, how should the following be treated in estimating GDPMP

a) Fee to a mechanic paid by a firm.

b) Interest paid by an individual on a car loan taken from the bank

c) Expenditure on purchasing a car for use by a firm.

Or

What precautions must be taken while estimating national income by Expenditure method?

6. Giving reasons categories the following into revenue or capital expenditure:

a) Subsidies

b) Grants given to state government

c) Repayment of Loans

7. Explain credit creation process of commercial banks.

8. Explain „Government Banker‟, function of central bank.

Or

Explain the „Lender of Last Resort‟, function of central bank.

9. Explain the meaning of Investment Multiplier. What can be its maximum value and why?

10. Calculate GDPFC and Factor income to abroad.

(in crores)

a) Compensation to employees 800

b) Profits 200

c) Dividend 50

d) GNPMP 1400

e) Rent 150

f) Interest 100

g) Gross Domestic Capital formation 300

h) Net Fixed Capital Formation 200

i) Change in stocks 50

j) Factor income from abroad 60

k) Net Indirect Taxes 120

11. Outline steps taken in deriving consumption curve from saving curve use diagram.

12. Give the meaning of Revenue deficit, Fiscal deficit and the Primary deficit.

Assignment – III

1. Complete and learn the project „Demonetization‟.

2. Prepare for Viva.

3. Solve Sample question paper (2018 -19)

Chemistry - Practice Paper

Biology Practice Paper-1

Time : 3 hrs. M.M.70

Section-A

1. Mention any two events that are inhibited by the intake of contraceptive pills.

2. Some pollen grains trigger sneezing and wheezing in certain human beings. What is the cause for this

type of response by the body?

3. If there were 20 Parthenium plants in area and 6 more were added by way of reproduction in a year,

calculate the birth rate.

4. Name one autosomal dominant and one autosomal recessive Mendelian disorders in human beings.

5. Write the two functions of the Codon AUG.

Section-B

6. Explain any two adaptation that favours autogamy in pea flowers.

7. Draw a labelled diagram of a nucleosome.

8. Differentiate between benign tumour and malignant tumour.

9. List the main steps to isolate DNA from bacterium.

OR

List four advantages of genetically modified plants.

10. a) What is micropropogation? Why are plants produced by micropropogation called soma clones?

b) Name the technique by which healthy plants can be recovered from virus infected plant.

Section-C

11. a) Name the type of natural selection shown in industrial melanism.

b) Evolution is not a direct process, but a strochastive process based on chance events in nature justify.

12. a) The meiotic division that occurs during oogenesis is different from that occurs during

spermatogenesis. Explain.

b) Middle piece of human sperm is called the power house of sperm. Justify the statement.

OR

Draw diagrammatic sectional view of human ovary and label six parts in it.

13. a) A male honey bee (drone) has no father but has a grand father justify the statement.

b) State the law of Mendel which is universally acceptable without any exception.

14. Identify a, b, c, d, e & f in the following table:

Organism Bioactive molecule Use

1 Monascus Purpureus A B

2 C D Antibiotic

3 E Cyclosporine A f

15. a) What modification us done on T, plasmid of Agrobacterium lumefaciens to conver it into cloning

vectors.

b) Why are those restriction enzymes which cut the DNA strands a little away from the centre of the

recognition site, more useful in construction of recombinant DNA.

16. a) Ecological succession is faster in a fire devasted forest than on a bare rock justify the statement.

b) How do the pioneer species on a bare rock pave way to the next stage.

17. a) An anther with malfunctioning taptetum often fails to produce viable male gametophyte. Justify.

b) Where does each of the following harmone act during spermatogenesis?

18. If the length of DNA of Ecoli is 1.36 mm, calculate the number of base pairs.

Four amino acyl t RNA‟s are shown above.

i) Find the sequence of their binding to the mRNA transcribed by DNA strand having base sequence as

follows 3‟ TACCGT GAC GTC5‟.

ii) Write the sequence of codons in mRNA transcribed.

19. a) Why is MOET considered to be a successful programme in cattle breeding?

b) What is meant by „superior‟ male and „superior‟ female cattle selected for this programme.

c) Why is the cow administered with FSH like hormones? Explain.

20. a) Why do the Zygotes in angiosperms divide only after a certain amount of endosperm is formed?

b) What is self-incompatibility why does self pollination not lead to seed formation in self-incompatible

species?

21. a) In bacterial culture on a certain medium, some of the colonies produce blue colour in the presence of

a chromogenic substance, while the others did not. Name the mechanism and mention its steps, that is

responsible for such a observation.

b) Why is the enzyme cellulose used for isolating DNA from plant cells but not for animal cell?

22. „Anthroprogenic actions have caused evolution of species‟ Explain with the help of two examples.

Section-D

23. A person in your group housing society has recently been diagnosed with AIDS many members of the

society has recently been diagnosed with AIDS. Many members of the society want him to leave the

society as they are scared of the spread of the disease.

a) Name the causative agent and write symptoms of the disease.

b) Mention the routes of transmission of the disease

c) Write your view on the situation

Section-E

24. a) Bring out the limitation of ecological pyramids.

b) How is biodiversity important for the functioning of ecosystem?

OR

a) Write the three hyptheses proposed for explaining. Why tropics have greater biodiversity?

b) What are sacred groves? What is their role in conservation of forest?

25. a) Describe the duct system associated with the human male reproductive system.

b) Draw a labelled diagram for the human ovum just released after ovulation.

OR

a) Describe the pollen pistil interaction in an angiosperm flower.

b) Show only diagrammatically, the process of binary fission in Amoeba. How does binary fission

differ from sporulation in Amoeba?

26. a) Describe the experiment conducted by Frederick Griffith on bacterial transformation.

b) Name the scientists who followed it to show that DNA is transforming principle. How did they prove

it?

OR

a) Represent only diagrammatically, the process of transcription of mRNA in an eukaryotic cell.

b) Why are both strands of DNA not transcribed?

c) Transcription and translation can be coupled in prokaryotes but not in eukaryotes. Justify.

Practice Paper-2

Time : 3 hrs. M.M.70

Section-A

1. What role do macrophages play in providing immunity to human body?

2. Name 2 animals that have become extinct due to over exploitation.

3. Why is apple referred as false fruit?

4. What forms the back bone of polynucleotide strand of a nucleic acid?

5. Name any one symbiont which functions as biofertilizers. Mention its specific role.

Section-B

6. What does comparison between the eyes of Octopus and those of mammals say about their ancestry and

evolution?

7. a) Why are exonucleases not useful in genetic engineering?

b) Why should a bacterial cell be made competent to introduce rDNA into it?

8. It is common sight in villages where cattle egrets and the grazing cattle are found in close association.

What kind of interaction do they show? Explain. Give an example of such an interaction from plants.

9. How can the DNA segments separated by gel electrophoresis by visualised and isolated?

OR

The following illustrates the linking of DNA fragments

i) Name „a‟ and „b‟

ii) Complete the palindrome which is recognised by ECORI

iii) Name the enzyme that can link the two DNA fragments.

10. Differentiate between multiple allekes and polygenes.

Section-C

11. Name any two Cu-releasing IUD‟s. How are they effective as contraceptives for human females?

12. Explain how Industrial melanism supports Darwinian natural selection.

13. How is innate immunity different from the immunity that you acquire through vaccination? Describe

any two ways by which innate immunity can be accomplished.

OR

Explain MOET. Explain the procedure of this technology in impriving cattle population.

14. Describe steps involved in the production of genetically engineered insulin.

15. a) Enumerate the steps taken by Delhi Government to reduce vehicular air pollution.

b) Why leave Cleitogamous flowers assured seed SeU?

16. Draw a labelled diagram of an anatropous ovule and label six parts other than the gametophyte.

17. Explain the initiation step of transcription in prokaryotes.

18. a) Why do farmers prefer biofertilizers these days? Explain.

19. Particular and gaseous pollutants along with harmless gases are released from the thermal power plants.

a) Name the two harmless gases released

b) Name the most widely-used device for removing particulate pollutants from the air. Explain how the

device works.

20. a) Why is DNA considered a better genetic material than RNA?

b) Write the central proposed by brick.

21. a) Describe the role of lymph nodes in providing immunity.

b) What are allergens?

22. a) Differentiate between in Situ and ex Situ approaches to conserve biodiversity.

b) How is the population density of each of the following measured?

i) fish in a lake

ii) Tigers in a tiger reserve

Section-D

23. Rakesh, a ten years old boy is suffering from thalassemia and he has to have periodic blood transfusion.

His parents as well as his brother, Ramesh are normal. Their family doctor talks to them about Stem

Cell therapy and requests Rakesh‟s parents to have another child to treat Rakesh. Yes, now Rakesh has

been cured of the disease and the family of give is happy.

a. Explain how it is possible that Rakesh alone is thalassemic in the family.

b. Name another genetic disorder which also occurs among the siblings but not found in their parents.

c. Mention the human values that the doctor has shown towards Rakesh‟s family.

Section-E

24. a) What are the advantages of breeding for disease resistance in plants?

b) How are evaluation and testing of a new crop variety carried out?

OR

a) Why should biological control of pests and pathogens be preferred to the conventional use of

chemical pesticides?

b) Explain how the following microbes act as biocontrol agents?

25. a) Describe the 2 major approached in the sequencing of the genome.

b) Recently a girl baby has been reported to be suffering from haemophilia. How is it possible? Explain

with the help of a cross.

OR

a) If the frequency of a parental from of a trait is higher than 25% in dihybrid test cross, what does that

indicate about the 2 genes involved?

b) How many types of gametes can be formed by an individual organism that is heterozygous for four

loci?

c) Fitness is the end result of the ability to adapt and get selected by nature. Explain with suitable

example.

26. a) Explain the eqn 1t tN N B I D E

On the following chart given below:

+

+ _

_

b) Mention the different ways by which the population density of different species can be measured.

OR

a) The pyramid of energy, is always upright. Explain.

b) Explain with the help of labelled diagrams, the difference between an upright pyramid of biomass

and an inverted pyramid of biomass.

Lesson-12 Biotechnology and its Application Q.1 How is Bt-cotton plant created as a GM plant? How is it protected against ball worm infestation?

Q.2 a) Explain the effect of deletion of the gene for ADA in an individual.

b) How does gene therapy help in this case?

Q.3 Expand GEAC established. Mention the responsibilities assigned to this organisation.

Q.4 Plasmid is a boon to biotechnology. Justify this statement quoting the production of human insulin as an

example.

Q.5 Name the source and the types of cry genes isolated from it for incorporation into crops by biotechnologists.

Explain how these genes have brought beneficial changes in the genetically modified crops.

Q.6 Differentiate between diagnostics and therapeutics. Give one example for each category.

Q.7 Name the biological product made in transgenic animal to treat emphysema explain the same.

Q.8 How is transgenic tobacco plant protected against Meloidegyne incognition. Explain the procedure.

IMMIGRATION (I)

MORTALITY (D) NATALITY (B) POPULATION DENSITY

(N)

EMIGRATION (E)

Q.9 Explain the steps involved in the production of genetically engineered insulin why is the insulin thus produced

preferred to the one produced from non-human sources.

Q.10 State the principle on which ELISA technique is based. How does it help in early detection of a disease?

Q.11 Why do the toxic insecticidal proteins secreted by Bacillus thuringiensis kill the insect and not the bacteria itself?

Q.12 Explain how a hereditary disease can be corrected. Give an example of the first successful attempt made towards

correction of such diseases.

Q13. List any two molecular diagnostic techniques and write one application of each of them.

Q14. Why is proinsulin so called? How is insulin different from it?

Q15. What are the advantages of molecular diagnostic over conventional methods?

Lesson-13 Organisms and Population Q.1 Define „Zero Population Growth Rate‟. Draw an age pyramid for the same.

Q.2 List any four characters that are employed in human population census.

Q.3 Explain broad parasilism with the help of an example.

Q.4 List three symptoms of high attitude sickness and state three adaptations to overcome it.

Q.5 How do organisms cope with stressful environmental conditions which are localized or of short duration?

Q.6 How do organisms like fungi, 200 planktons and bears overcome the temporary short lived climate stressful

conditions explain?

Q.7 Why is predation required in a community of different organisms?

Q.8 Competition does not always occur between closely related species for the same resources sustantiate the

statement with examples.

Q.9 a) What is the age pyramid?

b) Explain with the help of figures, the three different types of age pyramids represented by human population.

Q.10 a) Why are herbivores considered similar to predators in the ecological context explain.

Differentiate between the following inter specific interactions in a population

a) Mutualism and competition b) Commensalism and Amenalism

Lesson-14 Ecosystem Q.1 How much of the net primary productivity of a terrestrial ecosystem is eaten and digested by herbivores?

Q.2 Name one organism found as secondary carnivore in an aquatic ecosystem.

Q.3 What does the base tier of the ecological pyramid represent?

Q.4 Under what conditions would a particular stage in the process of succession revert back to an earlier stage?

Q.5 Arrange the following as observed in vertical slatification of a forest Grass, shrubby plants teack amaranthus.

Q.6 Name an omnivore which occurs in both grazing food chain and the decomposer food chain.

Q.7 Justify pitcher plant as producer.

Q.8 Name any 2 organisms which can occupy more than one tropic level in a ecosystem.

Q.9 Among bryophytes, lichens and ferns which one is a pioneer species in a zeric succession?

Q.10 What is ultimate source of energy of ecosystem?

Q.11 Why are oceans least productive?

Q.12 Why is the rate of assimilation of energy at the herbivore level called secondary productivity?

Q.13 What is common to earthworm, soil mites and dung beetles in an ecosystem?

Q.14 Differentiate between the 2 different types of pyramids of biomass with the help of an example each.

Q.15 Describe the process of decomposition of detituts under following heads fragmentation, leaching, catabolism

humification and mineralisation.

Fine Arts

Complete your portfolio for your final examination with 20 compositions and 20 still lifes.

Cover and decorate your file.

Do not write your name on any of your sheets.

Leave space for your board roll no. to be written on your portfolio.