S.B.P. D.A.V. Centenary Public School, Fatehabad.
Website: www.davfatehabad.in, E. Mail: sbpdavftb@yahoo.co.in, Ph. 222664
Holidays Assignments for Summer Vacations.(XI MEDICAL)
General Instructions:
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The summer break will be from 24 May 2015 to 5 July 2015 (Both days inclusive). School will
reopen on 6 July, 2015.
Revise the syllabus of all subjects done before summer vacations for Unit Tests to be arranged in
July as given in planner.
Listen to news and read the news paper of English daily .
ENGLISH
1. Cut advertisements from the ‘classified ads’ of newspapers and paste them under the following
heads in Drawing sheets.
1) Situation vacant
2) Sales and purchase (property / vehicles / household goods)
3) To let
4) Lost and found
5) Educational institutions / courses
6) Missing persons / pet animals.
7) Travel and tours.
2. Select two interesting news reports and two articles from the editorial page and paste them in
Drawing sheets.
3. Give a brief description of a place of worship you frequently visit. (80 words)
4. Prepare a speech to be given in the morning assembly on the topic ‘Utility of holidays’
homework’.(150-200 words)
5. You are Vishu / Vidhi a budding journalist for a local daily. Write an article on ‘Play Time: The
vanishing joy of childhood’ based on your own ideas. (150-200 words)
6. Read Novel “The Canterville Ghost by Oscar Wilde” Prepare Assignment on its Characters and
summary not exceeding 6 pages in Drawing sheets.
Change the beginning and the end of the story. Then rewrite it in your own words in your English
note book.
7. Complete Modules from BBC Compacta in good Handwriting. (Use pencil)
Module 1 – Worksheet 1 to 10 (Reading Comprehension)
Module 2 – Worksheet 27,28,29, 35 to 40 (Notice and Advertisements)
Module 4 – Worksheet 43,44,45,46,48,49,50 (Article and Sppech)
Module 5 – Worksheet 66 to 71 (letters)
Module 6 – Worksheet 74 to 79 (Grammar)
Module 7 – Worksheet 96,97 (Poems)
8. Search the CBSE site for HOTS questions in English Core and write at least 2 questions from each
chapter as well as look up value based questions also.
PHYSICS
1. Complete Lab Manual for I Term.
2. Write answers of following assignment in your holidays’ homework notebook.
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One mark questions:
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What is gravitational force?
What is electromagnetic force?
What is nuclear force? What is range of nuclear forces?
Write the relation between parsec and light year.
Define the radian, steradian, light year, parsec.
Calculate the number of light years in one metre.
The mass of an electron is 9.11 x 10-31 kg. How many electrons would make 1 kg?
What is a coherent system of units?
Can a body have zero mass & zero weight.
Name two type of mass.
How many times is larger than a microsecond?
How many times a kg is larger than a mg.
Is light year a unit of time?
What is the average distance of electron from the sun?
Are inertial & gravitational mass of a body different from one another?
Give three examples of dimensionless variable.
Can a quantity have dimensions but still no units?
How many ergs in one kilowatt hour?
Name a scalar & a vector quantity which have same dimensions.
Can there be a quantity which has no units and no dimensions?
Can a quantity have units but still be dimensionless?
What is the unit of pressure in S.I.?
Find dimensional formula of latent heat.
Which physical quantity is represented by product of moment of Inertia & angular velocity?
Write the dimensions of rate of flow.
Fill in the blanks:
a. 1 kg m2s-2 = ---- g cm2 s-2
b. 1 m = ----- light year.
c. 3 m / S2 = ----- km / h2
d. G = 6.67 x 10-11 N m2 / kg2 = ------ cm3 / s2 / g.
Write the dimensional formula of power.
What do you mean by least count?
Define significant figures.
Are the choice of mass, length and time as fundamental quantities unique?
Will a distant star show greater parallax or a near star for the same baseline?
What are the dimensions of angular displacement?
Are all constants dimensionless?
Can a quantity have units but still be dimensionless?
Write the rule to round off digit 5 followed by a zero.
What is the basis of the principle of homogeneity of dimensions?
Write three physical quantities having dimensional formula [ML-1T-2].
Justify M + M = M and M – M = M.
Which quantity in a given formula should be measured most accurately?
Define one dimensional motion.
Give an example of motion in two dimensions.
Define three dimensional motion.
Plot a position-time graph for a stationary car or an object.
Define displacement of a particle.
Explain the difference between uniform velocity and variable velocity.
Define average and instantaneous velocity.
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What does slope of position-time graph represents?
Define uniformly accelerated motion and non-uniformly accelerated motion.
What is the physical meaning of acceleration?
Define average acceleration of a body.
Define instantaneous acceleration of a body.
Draw velocity-time graph for the motion of a body moving with uniform positive acceleration.
Draw velocity-time graph for the motion of a body moving with uniform negative acceleration.
Area under v-t graph = ……………
Draw position-time graph for the motion of a body moving with uniform negative acceleration.
Define negative vectors.
Pick out the only vector quantity in the following list: temperature, pressure, impulse, time, power, total
path length, energy, gravitational potential, coefficient of friction, charge.
58. State the essential condition for the addition of vectors.
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59. Express the unit vector
in mathematical form.
60. Evaluate . .
61. What is the angle made by + with x-axis?
62. What is the angle between x and x ?
63. Under what condition will the directions of sum and difference of two vectors be same?
64. What is the maximum and minimum resultant we can have for two vectors
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Given : + = + , what can you about the angle between and ?
Can two non-zero vectors give zero result when they multiply each other?
Can three vectors lying in a plane give zero resultant?
A quantity has both magnitude and direction. Is it necessarily a vector?
Given . ( + + ) =
. What is the angle between (i) and (ii) and ?
Can the resultant of two vectors of different magnitudes be zero?
Name a quantity which remains unchanged during the flight of an oblique projectile.
At which point of the projectile path, the speed is minimum?
For a projectile fired obliquely, where is the speed maximum?
In the case of obliquely fired projectile, what does the product of the horizontal component of velocity and
the time of flight give?
75. A body is projected so that it has maximum range R. What is the maximum height reached during the flight?
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Two marks question:
Explain law of conservation of energy with example.
Explain law of conservation of linear momentum with example.
Explain law of conservation of angular momentum with example.
Give the properties of nuclear forces.
Give the properties of gravitational forces.
Which of these are largest Astronomical unit, light year & parsec?
How many a. m. u. make 1 kg?
What is the difference between nm, mN, Nm?
What is meant by giga, micro & femto?
What is the difference between AU & A°?
What are dimensional constants? Explain with examples.
What are dimensionless variables? Explain with examples.
Add 6.75 x 103 kg to 4.52 x 102 kg.
A substance weighing 5.74 g occupies a volume of 1.2 cm3 calculate its density with due regard to have two
significant digits.
15. Write four physical quantities which have the same dimensional formula.
16. If x = a + bt2 + c t3. Where x is in metres & t is in seconds. Find the units of b.
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17. What is random error? Explain with an example how this error can be estimated.
18. Find an expression for the maximum error when a physical quantity depends upon the product of two
physical quantities.
19. Describe in each case whether the motion is one, two or three dimensional
a. a moving car on a straight highway.
b. a piece of paper flying in air.
c. the earth revolving around the sun.
20. Distinguish between distance and displacement.
21. Can a body be said to be rest as well as in motion at the same time? Explain.
22. Distinguish between speed and velocity.
23. Why does a person sitting in one train think that the other train is at rest, when both the trains are moving
on parallel tracks with the same speed and in the same direction?
24. What is a velocity-time graph? Mention its use?
25. Give the basic definitions of the following:
A reference system, path, uniform velocity, average velocity, uniform acceleration.
26. Given below are some examples of motion state in each case if the motion is one, two or three dimensional:
a. Speeding car on a long straight highway
b. A carom coin rebounding from the side of the board.
c. A planet revolving around its star.
27. Distinguish between velocity & speed.
28. Sketch the velocity-time graph of uniform motion. What does it represent?
29. Is it possible that the brakes of car are so prefect that the car-stops instantaneously if not why not?
30. Define relative velocity Draw time graph for the following situations:-
i. VB> VA
ii. VB = VA
iii. VB< VA. Assume that body A is ahead of Body B.
Three marks question:
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Write the difference between gravitational force, electromagnetic force, nuclear (strong & weak).
Write the characteristics of a standard unit.
Write difference between fundamental & derived unit with example.
Define the term one light year, astronomical unit & Parsec.
In the equation y = A sin (wt - kx), obtain the dimensional formula of w & k. Given x is
distance & t is time.
6. Energy & young’s modulus have the same dimension comment.
7. The rotational K.E. of a body is given by ½ Iw2. Use this equation to obtain the dimension of I. Where I=
Moment of inertia, w = angular velocity.
8. The value of Stefan’s constant is σ = 5.67 x 10-8 J/S / m2/ K4. Find its value in cgs system.
9. Using dimensional analysis check the accuracy of the following relations:i.
Snth = u + a/2 (2n - 1)
ii. λ = h/mviii. E = mc2
Where the symbols have there usual meanings.
10. Check the correctness of the relation
h = 2 σ cos θ
r dg
Where h is height, σ is surface Tension, θ is angle of contact, r is radius, d is density and g is
acceleration due to gravity
11. The position of particle moving along x axis. Depends on time according to the equation x = at2 + bt3. Where
x is in metre, t is in sec. What are the units & dimensions of a & b.? What do they represent?
12. Write the dimensions of a/b in the relation
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P=
, where P is pressure, x is distance, t is time,
13. Which of the following measurements is most accurate and which is most precise:
i. 4.00 mm
ii. 4.00 cm
iii. 4.00 m
iv. 40.00 m?
14. Reynold number NR(a dimensionless quantity) determines the condition of laminar flow of a viscous
liquid through a pipe. It is a function of density of the liquid , its average speed v, called critical
velocity and the coefficient of viscosity proportional to d, the diameter of the tube, with the help of
dimensional analysis deduce an expression for Reynold number.
15.Check the accuracy of the relation T = 2
, where T is the time period, L the length and g is the
acceleration due to gravity.
16. The time period of an oscillating drop of radius ‘r’, density ‘
t=K
and surface tension ‘S’ is
. Check its correctness using dimensional analysis.
17. The wavelength ‘ ’ associated with a moving particle depends upon its mass ‘m’, its velocity ‘v’ and
Planck’s constant ‘h’. Show dimensionally that
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18. The speed v of a wave on a string depends on the tension F in the string and the mass per unit length
m/l of the string. If it is known that dimension of F = [MLT-2], find the constants a and b in the
following equation for the speed of a wave on a string: v = (constant ) Fa (m/l)b.
19. If Force (F), velocity (V) and acceleration (A) are taken as the fundamental units instead of mass,
length and time, express force gradient (force/length) in terms of F, V and A.
20. If force (F), Length (L) and Time (T) are the fundamental units instead of mass, length and time,
express compressibility in terms of F, L and T.
21. A planet moves round the sun in a circular orbit. The time period of revolution T of the planet
depends on: i. radius of the orbit R, mass of sun M, gravitational constant G. Confirm dimensionally
T2αR3.
22. Given that the time period T of oscillation of a gas bubble from an explosion under water depends
upon P, d and E, where P is the static pressure, d is density of water and E the total energy of
explosion. How does T depend upon P, d and E?
23. Taking velocity, time and force as the fundamental quantities, find the dimensions of mass.
24. If the velocity of light c, acceleration due to gravity g and atmospheric pressure p are the
fundamental quantities find the dimensions of length.
25. If E, M, J and G respectively denote energy, mass, angular momentum and gravitational constant,
calculate the dimensions of EJ2/M5G2.
26. If the unit of force is 1 kN, unit of length 1 km and the unit of time is 100 s, what will be the unit of
mass?
27. The velocity ‘v’ of water waves depends on the wavelength ‘ ’, density of water ‘ ’ and the
acceleration due to gravity ‘g’. Deduce by the method of dimensions the relationship between these
quantities.
28. Derive by the method of dimensions, an, expression for the volume of a liquid flowing out per
second through a narrow pipe. Assume that the rate of flow of liquid depends on (i) the coefficient of
viscosity ‘ ’ of the liquid (ii) the radius ‘r’ of the pipe and (iii) the pressure gradient [P/L] along the
pipe.
29.The period of vibration of a tuning fork depends on the length L of its prong, density d and Young’s
modulus Y of its material. Deduce an expression for the period of vibration on the basis of
dimensions.
30. Round of the following numbers as indicated:
i. 18.35 up to 3 digits
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ii. 143.45 upto 4 digits
iii. 18967 upto 3 digits
iv. 12.653 upto 3 digits
v. 248337 upto 3 digits
vi. 321.135 upto 5 digits
vii. 101.55 x 105 upto 4 digits
viii. 31.325 x 10-4 upto 4 digits.
31. The mass of a box measured by a grocer’s balance is 2.3 kg. Two gold pieces of masses 20.15 g and
20.17 g are added to the box. What is (a) the total mass of the box and (b) the difference in the
masses of the pieces to correct significant figures?
32. The resistance R = V/I, where V = 100 0.2 A. Find the percentage error in R.
33. The period of oscillation of a simple pendulum is T = 2
, Measured value of L is 20.0 cm known
to 1 mm accuracy and time for 100 oscillations of the pendulum is found to be 90 s using a
wristwatch of 1 s resolution. What is the accuracy in the determination of g?
34. For the estimation of Young’s modulus Y =
for the specimen of wire, following observations
were recorded L = 2.890, M = 3.00, d = 0.082, g = 9.81, l = 0.087. Calculate the maximum
percentage error in the value of Y and mention which physical quantity causes maximum error.
35. If two resistors of resistances R1 = (4 0.5) and R2 = (16 0.5) are connected (i) in series and
(ii) in parallel; find the equivalent resistance in each case with limits of percentage errors.
m/s what will be its acceleration?
36. If the velocity of particle is given by v =
37. The acceleration of a particle starting from rest, varies with time according to relation:A = -rw2 sin wt. Find the displacement of this particle at a time t.
38. A racing car moving with constant acceleration covers two successive kilometers in 30 s and 20 s
respectively. Find the acceleration of the car. [2/3 m/s2].
39. A body covers 12 m in 2nd second and 20 m in 4th second & 5th second, find what distance the body will cover
in 4 seconds and 5 seconds?
40. Discuss the motion of an object under free fall & draw a. acceleration – time b. velocity-time c. position time
graph for this motion.
41. Find the distance travelled by the uniformly accelerated object moving in one dimension in nth second.
42. State & prove polygon law of vector addition.
43. Explain how a vector cab be subtracted from a vector .
44. What do you understand by the non uniform motion? Explain variable velocity and instantaneous velocity of
an object in one dimensional motion.
45. What do slopes of position – time & velocity time graph of uniform accelerated motion represent?
46. Show that area under velocity time graph of a particle in uniform motion gives the displacement of the
particle in given time.
47. Show that slope of displacement time graph is equal to velocity of uniform motion.
48. Derive the relation:S = u t + at2
49. Resultant of two equal forces acting at right angles to each other is 1414 dyne. Find the magnitude of each
force.
50. A flywheel is making 60 r. p.m. Calculate the linear speed of the point on its rim. The radius of the wheel is
3m.
51. What is the angular speed in rad/s of the hour, minute & second hand of the clock?
52. Find the range of the ball which when projected with a velocity of 29.4 m/s just passes over a pole 4.9 m
high.
53. It is easier to pull a lawn roller than to push it explains.
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54. What do you mean by the resolved part of a vector? Find their values, when one of them makes an angle θ
with a given vector.
55. What is centripetal acceleration? Derive an expression for it.
56. Show that these are two angles of projection for a projective to have the same horizontal range. What will
be the maximum height attained in two cases? Compare the two heights for θ = 300&θ = 600.
57. Derive the relationship between linear acceleration and angular acceleration.
58. Derive the relationship between linear velocity & angular velocity.
59. Show that when a projectile is thrown parallel to horizontal then it will follow parabolic path.
Five marks questions:
1. Explain parallax method for measuring distance of star.
2. A projectile is fired with a certain velocity u making an angle θ with the horizontal. Find the maximum height
attained, total time of flight & the horizontal range. Show that its trajectory is parabolic.
3. Derive an expression for the horizontal range of projectile. Prove that there are two angles of projection for
the same horizontal range.
4. What is a projectile? Give its examples. Show that the path of projectile is a parabolic path when projected
horizontally from same height.
5. State triangle law of vector addition. Find analytically the magnitude & direction of resultant vector
a. When two vectors are parallel to each other.
b. When two vector are perpendicular to each other.
CHEMISTRY
1) Learn Lesson 1,2,3 (NCERT, Pradeep).
2) Take your roll number as atomic number. Find out element that has same atomic number as your roll
number. Collect & learn all information about that element & prepare a presentation.
(Information about electronic configuration, valence electrons, valency, type of ion, metallic or nonmetallic character, atomic radii, variation of ionization energy, electron gain enthalpy etc.)
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3) Complete Lab Manual.
What is homogeneous mixture? Give two examples.
Write the S.I unit of temperature.
Define law of multiple proportion with example.
What are the limitations of law of constant composition
How much CO2 is produced when 6 gm of Carbon is burnt in excess Oxygen.
Calculate the mass percent of Na and Cl atoms in common salt.
Determine the molecular formula of an oxide of iron if the mass % of iron and oxygen are 69.9% and 30.1%
resp. Molar mass of compound is 170 gm/mol.
The density of 3 M solution of NaCl is 1.25gm/ml. Calculate the molality of the solution.
State Avogadro law with example.
10 L of a welding gas weighs 11.6 gm at STP. Calculate the molar mass of this gas.
Calculate the number of atoms in (a) 5 L oxygen gas at STP (b) 4.4 gm of CO2 (c) 52 a.mu of He
Calculate the number of moles in (a) 5 L of 0.75 M Na2CO3 (b) 7.85 gm iron (c) 34.2 gm of sucrose
A compound contains 4.07% hydrogen, 24.27% carbon and rest chlorine. Its molar mass is 98.96 gm.
Determine its empirical and molecular formula.
State Gay lussac law of gaseous volumes.
What are the main points and limitations of Dalton’s atomic theory?
Define Molality of a solution. How it is different from molarity?
1.24 g white phosphorus P4 reacts with oxygen to produce P4O6, an acidic oxide. The solution of P4O6 in
water is acidic and is neutralized with NaOH. How many moles of NaOH are required to neutralize H3PO3
generated in above.
What are Cathode rays? How they are produced? What are the properties of cathode rays?
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19) Explain the discovery of Neutrons.
20) Prepare at least two conversions for each:
a) m3 to litre b) m3 to cm3 c) atm to barr d) Kelvin to oF e) cm2 to nm2
21) A metal forms two oxides. One contains 46.67% of the metal and another 63.94% of the metal. Show that
these results are in accordance with law of multiple proportions.
22) An organic liquid having Carbon , hydrogen, oxygen and nitrogen contains
C=41.37%, H=5.75%, N=16.09% and rest is oxygen. Calculate the molecular formula of liquid if its V.D. is 43.3
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Write the steps used to balance chemical equation using partial equation method giving an example.
Define limiting reagent with example.
Explain Rutherford model of an atom.
Write postulates of Bohr’s model of atom.
Define Heisenberg’s uncertainty principle.
Difference between orbit and orbital.
Explain Aufbau’s principle
Write complete electronic configuration of elements from 1 to 40.
Define periodicity.
What is ionization energy? How it varies from left to right and top to bottom in a periodic table?
What is electronegativity? Arrange the given elements in increasing order of electroneagtivity: Nitrogen,
Oxygen, Carbon, Hydrogen, Bromine, Chlorine, Fluorine, Sulphur, phosphorus, Iodine
Why atomic masses are the average values? Explain by giving example.
Why is molality preferred over molarity in expressing concentration of solution?
In combustion of methane, which is limiting reagent and why?
What is empirical and molecular formula? How they are related with each other?
Calculate no. of protons, electrons and neutrons in potassium, Calcium ion, ferrous ion, zinc.
Calculate mass no. and atomic no. if chlorine ion has 18 electrons and 20 neutrons
In Rutherford’s experiment, generally thin foils of heavy atoms like gold, platinum etc. is used in
bombardment of alpha particles. If thin films of light atoms like aluminium etc. are used, what difference
would be observed?
Name five d- orbital’s. Draw and discuss their shapes.
Define Quantum numbers. Show that how different quantum numbers are related with each other.
State and explain de- Broglie relation.
How many no. of nodes are present in 3P orbital?
Why Heisenberg uncertainty principle has no significance in our daily life?
What are the advantages of long form of periodic table?
What are the limitations of mendleev’s periodic table?
What are the general characterstics of s and p block elements?
What are the factors affecting Ionization energy?
The first ionization energy of Carbon atom is greater than that of Boron, whereas reverse is true for second
ionization enthalpy. Explain.
BIOLOGY
Do following assignments:
1.) Give a brief account of cell theory.
2.) Differentiate between prokaryotic & eukaryotic cell.
3.) What is meant by flow of information? How intrinsic flow of information is different from extrinsic
flow?
4.) Explain fluid mosaic model of cell membrane
5.) Discuss the structures & functions of :
a) Cell wall
b) Mitochondria
c) Plastids
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d) Lysosomes
e) Golgi bodies
f) Ribosomes
g) Endoplasmic reticulum
6.) Explain the process of transport across a cell membrane.
7.) Write a brief note on cell inclusions.
8.) Explain the following:
a) Mitochondria is an autonomus organelle
b) Mitochondrial ribosomes resembles prokaryotic ribosomes
c) Anaerobic organisms do not have mitochondria
d) Mitochondrial DNA is not associated with proteins
9.) Why don’t lysosomal enzymes destroy cell’s own cytoplasm?
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Why nucleus has envelope on it? What is the function of nuclear pores?
11.)
How do centrioles & centromere differ?
12.)
What is concentration gradient?
13.)
Explain the following terms:
a) Diffusion
b) Osmosis
c) Reverse osmosis
Biomolecules
1.) Explain the following terms:
a) Glycosidic linkage
b) Peptide linkage
c) Peptones
d) Glycans
2.) Oils do not dissolve in water, Why?
3.) Describe the Watson Crick model of DNA
4.) Describe the structure & function of cellulose.
5.) Differentiate between
a) Fibrous & globular proteins
b) Monosaccharides & oligosaccharides
c) Acidic & basic amino acids
d) True & derived lipids
e) Trure & conjugated proteins
6.) Write a note on enzyme specificity.
7.) Describe the competitive inhibition of enzyme action.
8.) Give a brief account of allosteric inhibition of enzyme action.
9.) Why are starch & glycogen are suitable asstorage products?
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What are the functions of lipids?
11.)
Write the structures of
a) Sucrose
b) Maltose
c) Lactose
d) Amylose
e) Cellulose
12.)
What are the differences between DNA & RNA?
13.)
Discuss the factors affecting enzyme activity.
Cell Cycle & Cell division
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Why it is not possible to shorten the cell cycle?
Why do chromosomes become short & thick in prophase?
Why is cell division necessary?
Discuss the significance of mitosis.
How is mitosis controlled?
Discuss the prophase of meiosis.
How do mitotic & meiotic anaphase differ?
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8.) What is S phase?
9.) Explain the significance of meiosis.
10.)
Differentiate between:
a) S phase & Gphase
b) Metaphase I & Metaphase II
c) Zygotene & pachytene.
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Discuss the modifications of mitosis & meiosis?
12.)
Draw a diagram of cell cycle.
13.)
How cell division is different in plant cell & animal cell?
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Telophase is a reverse of prophase. Discuss
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Do all the NCERT questions of chapters done in class
Prepare practical file
Physical Education
Do following assignments:
1. What do you mean by Wellness?
2. What are Olympic Awards?
3. What do you mean by Physical Fitness?
4. What is Olympic motto?
5. What do you mean by Health status indicators?
6. Explain the origin of Modern Olympic games.
7. Define components of Positive lifestyle in detail.
8. What is the aim of C.B.S.E sports?
9. Elucidate the importanc of Physical fitness and Wellness.
10. Discuss the main functions of I.O.C.
11. Discuss the Factors affecting Physical fitness And Wellness in detail.
12. Explain about Arjuna Award.
13. How can health threat be prevented through lifestyle change? Discuss in detail.
14. Discuss the objectives of Indian Olympic Association.
MUSIC INSTRUMENTAL
Learn ‘Teen Taal’ with description.
Write character sketch of ‘Miyan Tansen’
Learn ‘Shruti’ with description.
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