Monday, June 15, 2015

worksheets of bio chapter cell

worksheet 1
Q NO Mks.
1. State whether the following statements are true or false :-
1. Viruses are non-living cellular organisms
2. The person who identified cells as rooms was Robert Hooke.
3. A prokaryotic cell has only 3 important structures of a cell
4. A Eukaryotic cell is the lesser evolved one.
5. Bacteria are unicellular organisms

2. Complete the following :-
i. ------- are an exception to the cell theory
ii. A ---- cell is lesser evolved.
iii. ---- and --- are single celled organisms
iv. ---- and ----- were the 2 scientists who proposed the cell
theory for the first time.
v. Cells were first discovered by ---------- in a ------.


4. Give the postulates of the cell theory. 3
5. Give one reason why viruses are considered as living

Answer key
1
Q NO Mks.
1. State whether the following statements are true or false :-
1. Viruses are non-living cellular organisms
False
2. The person who identified cells as rooms was Robert Hooke.
True
3. A prokaryotic cell has only 3 important structures of a cell
True
4. A Eukaryotic cell is the lesser evolved one.
False
5. Bacteria are unicellular organisms
True

2. Complete the following :-
i. ------- are an exception to the cell theory
Viruses
ii. A ---- cell is lesser evolved.
Prokaryotic
iii. ---- and --- are single celled organisms
Bacteria , Amoeba
iv. ---- and ----- were the 2 scientists who proposed the cell
theory for the first time.
Schwann , Schleiden
v. Cells were first discovered by ---------- in a ------.
Robert Hooke, cork
4. Give the postulates of the cell theory.
1. All organisms are made up of cells
2. Cell is the structural and functional unit of an organism
3. Existing cells give rise to new cells

5. Give one reason why viruses are considered as living.
A- They reproduce
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worksheet 2
Q No. Mks.
1 List the structures which are common to plant and animal cell
2. List the structures found only in plant cell
3. List the structures found only in animal cell
4 Name the 3 basic characteristics of a cell
5. Name an animal which has chloroplasts
6. Name the organelle inside the cell that gives mechanical support to
the cell.

7. Which of the following is found both in the mango plant and a
monkey?
Cell wall , chloroplasts, centrioles, cell membrane

8. All life starts as ?
Egg, cell, a chromosome, a gene

9. Give reasons as to why cells are small in size.

Answers

Q No. Mks.
1 List the structures which are common to plant and animal cell

i. Cell membrane
ii. Endoplasmic reticulum
iii. Ribosomes
iv. Mitochondria
v. Golgi apparatus
vi. Lysosomes
vii. Nucleus

2. List the structures found only in plant cell
i. Plastids
ii. Cell wall
iii. Permanent vacuoles

3. List the structures found only in animal cell
i. Centrosomes
ii. Centrioles

4 Name the 3 basic characteristics of a cell
i. Cell membrane
ii. Nucleus
iii. cytoplasm


5. Name an animal which has chloroplasts
Euglena

6. Name the organelle inside the cell that gives mechanical support to
the cell.
Central vacuole

7. Which of the following is found both in the mango plant and a
monkey?
Cell wall , chloroplasts, centrioles, cell membrane
Cell membrane

8. All life starts as ?
Egg, cell, a chromosome, a gene
Cell

9. Give reasons as to why cells are small in size.
i. In order to occupy a larger surface area
ii. Be able to communicate with each other conveniently

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worksheet 3

1
Q No Mks.
1 What name will you give to a cell in which the nuclear membrane is
not well marked?

2. Compare the compositions of hypotonic, Isotonic, and hypertonic
solutions with that of the cell sap

3. Name the structure that is absent in animal cell since they have
bones.

4. State whether true or false :-
i. Movement of liquid particles through a semi permeable
membrane is called diffusion
ii. DNA molecules establish the true parental lineage of the
child
iii. Central vacuole gives rigidity to the plant cell from inside
iv. Vacuoles are temporary in animal

5. Select the appropriate answer :-
i. If a cell swells up when kept in a solution, the solution is
a. Hypertonic
b. Hypotonic
c. isotonic

ii. cytoplasm contains the
a. cell wall
b. cell organelles
c. cell membrane

iii. cell organelles can be compared to
a. cell wall
b. plasma membrane
c. nucleus
d. various demarked areas in a house with specific functions

iv. A cell bursts when kept in hypotonic solution bursts, then it is
a. A. Plant cell
b. An animal cell
c. A bacterial cell
d. A fungal cell

v. Throwing out of water by a cell is
a. Phagocytosis
b. Endocytosis
c. Potocytosis
vi. Root hair absorbs water by
a. Osmosis
b. Diffusion
c. Both of above
d. Neither of above

vii. Plasmolysis occurs due to
a. Breaking down of plasma
b. Shrinkage of cytoplasm in hypertonic solution
c. Shrinkage of nucleoplasm
d. None of the above

6. Which structure of the cell helps to establish the correct identity of a
child’s father?

7. Where are these structures found? 1
8. State the number of chromosomes the reproductive cell of a human
contains.

9. Why do they contain half the no. of chromosomes as in an adult 1

human being?
10. What are the terms given to cells with 46 chromosomes and those
with 23 chromosomes? 2
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answer key
1
Q No Mks.
1 What name will you give to a cell in which the nuclear membrane is
not well marked?
Prokaryotic cell

2. Compare the compositions of hypotonic, Isotonic, and hypertonic
solutions with that of the cell sap
Hypotonic solution ---- is dilute as compared to cell sap as it has
more water content
Isotonic solution has the same concentration as that of the cell sap
Hypertonic solution is more concentrated as compared to the cell sap
as it has lesser water content

3. Name the structure that is absent in animal cell since they have
bones.
Cell wall

4. State whether true or false :-
i. Movement of liquid particles through a semi permeable
membrane is called diffusion
False

ii. DNA molecules establish the true parental lineage of the
child
True

iii. Central vacuole gives rigidity to the plant cell from inside
True

iv. Vacuoles are temporary in animals
True

5. Select the appropriate answer :-
i. If a cell swells up when kept in a solution, the solution is
Hypotonic
ii. cytoplasm contains the
cell organelles
iii. cell organelles can be compared to
various demarked areas in a house with specific functions
iv. A cell bursts when kept in hypotonic solution bursts, then it is
An animal cell
v. Throwing out of water by a cell is
Potocytosis

vi. Root hair absorbs water by
a. Osmosis

vii. Plasmolysis occurs due to
Shrinkage of cytoplasm in hypertonic solution

6. Which structure of the cell helps to establish the correct identity of a
child’s father?
The DNA molecules

7. Where are these structures found?
In the nucleus on the chromosomes

8. State the number of chromosomes the reproductive cell of a human
contains.
23 chromosomes 1

9. Why do they contain half the no. of chromosomes as in an adult
human being?
This is so because then after the fusion of the 2 reproductive cells the
fertilised cell will have 46 chromosomes

10 What are the terms given to cells with 46 chromosomes and those
with 23 chromosomes?
23-Haploid and 46- Diploid respectively

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worksheet 4

1
Q No. Mks.
1. State whether the given statements are true or false :-
i. Ribosomes are made of Deoxyribonucleic acid
ii. Cellulose is a protein
iii. Plasma membrane is present in all cells
iv. Movement of a substance from an area of high
concentration to an area of low concentration is called
diffusion
v. Plant cells are bounded by a wall made of cellulose.
vi. A dilute solution is called a hypertonic solution
vii. Cell wall of a plant cell is a living structure.

2.
Fill in the blanks :--
i. An ostrich egg is the -------- animal cell
ii. Cellular organelles called ------ are often called suicidal
bags.
iii. The additional protective layer in plant cells present outside
the plasma membrane is called ------ .
iv. Plant cell wall is ----- permeable membrane


Name the following :--
i. The 2 sex hormones
ii. Endoplasmic reticulum having the ribosomes on it
iii. The molecules of this substance are present in the ribosomes
iv. The organelles that despatch material to the various parts of
the cell.
v. The melanin pigment is stored in this.
vi. This extends from the plasma membrane to the nuclear
membrane.


4. Give reasons for :-
i. Why are golgi bodies not present in the RBCs?
ii. Animal cell does not have a cell wall

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Answer key

1
Q No. Mks.
1. State whether the given statements are true or false :-
i. Ribosomes are made of Deoxyribonucleic acid
False
ii. Cellulose is a protein
True
iii. Plasma membrane is present in all cells
True
iv. Movement of a substance from an area of high
concentration to an area of low concentration is called
diffusion
True
v. Plant cells are bounded by a wall made of cellulose.
True
vi. A dilute solution is called a hypertonic solution
False

vii. Cell wall of a plant cell is a living structure.
False
.
Fill in the blanks :--
i. An ostrich egg is the -------- animal cell
biggest
ii. Cellular organelles called ------ are often called suicidal
bags.
lysosomes
iii. The additional protective layer in plant cells present outside
the plasma membrane is called ------ .
Cell wall
iv. Plant cell wall is ----- permeable membrane
Freely permeable membrane


Name the following :--
i. The 2 sex hormones
Testesterone, Oestrogen
ii. Endoplasmic reticulum having the ribosomes on it
Rough Endoplasmic Reticulum
iii. The molecules of this substance are present in the ribosomes
Ribonucleic Acid
iv. The organelles that despatch material to the various parts of
the cell.
Golgi bodies
v. The melanin pigment is stored in this.
Vacuoles
vi. This extends from the plasma membrane to the nuclear
membrane.
Endoplasmic reticulum

4. Give reasons for :-
i. Why are golgi bodies not present in the RBCs?
RBCs do not contain nucleus
ii. Animal cell does not have a cell wall
Mechanical support given by skeletal system.

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Friday, June 12, 2015

Rubrics for integrated project

Language 


1. Speaking Skill(10)
. Oratory,Voice Modulation, Clarity of Speech, Correct and acceptable pronunciation

2. Grammar(10)
Error free written and spoken language as per grammatical use and correct spelling.

3. Interaction(10)
Correct listening and correct response

4. Effective use of Language (10)
In presenting ideas

5. Communication(10)
Flow and confidence

6.. Use of Language in integration of subject(10)

Maths, Science and Sst.


1. Relevant content (10)

2, Research and reference (10)

3. Effective presentation (10)

Use graph, mind map, picture, video etc.

4. Real life connect (10)

5. Finding conclusion for recommendation(10)

6. Use of Subject knowledge in integration of subject(10)

हिन्दी पाठ्यक्रम तथा प्रश्नपत्र प्रारूप







Thursday, May 7, 2015

list of practicals

1.1 to test the presence  of starch in a given food sample.
1.2 To test the presence of of the adulterant metanil yellow in dal.

2.(a) To prepare temporary mount of onion cell.
    (b) to prepare temporary mount of cheek cell

3. (a) to study different types of plant tissue
     (b) to study different type of animal tissue

4. to determine the mass percentage of water imbibed by rasins.

note book work for cell

Answer the following questions

1 marks questions 

1.   What is cell

2.   What are prokaryotic cell

3.   What are eukaryotic cell

4.   What is plasma membrane

5.   What is protoplasm

6.   Name the biomolecules present in plasma membrane

7.   What is meant by selectively permeable

8.   Define diffusion

9.   What is osmosis
 
    3 marks questions 

10.                     Define hypertonic, hypotonic and isotonic solution

11.                     What is the main function of each of the following organelles. (a) ribosome (b) cell wall

12.                     Write main function of golgi bodies and vacuole.


13.                     Distinguish between prokaryotic and eukaryotic cells

14.                     Write down difference between organ and organelles

15.                     Write down the difference between diffusion and osmosis

16.                     Write difference between plant and animal cell

17.                     Distinguish between choromoplast and leukoplast

18.                     What will happen in a cell if its nucleus is removed? Give reason in support of your answer

19.                     Lysosomes are known as suicide bags’ why?

20.                     Write the name of cell organelles

5        5 marks questions 

21.                     Which organelles is the power house of cell. Write in brief its function

22.                     Write its location in cell . chromatin , chromosomes, tonoplast, nucleolus

23.                     Where do ribosome  get synthesized. write its  functions.



24.                     Draw a well labeled diagram of animal cell and plant cell and mention one function of the main cell organelles

25.                     Write a short note on mitochondria and Golgi apparatus 
26. write functions of plasma membrane 
27. write a note on endoplasmic reticulum.


Tuesday, May 5, 2015

THE DOG NAMED DUKE


THE DOG NAMED DUKE

Q1.‘Duke was an extraordinary dog.’ What special qualities did he
exhibit to justify this?
Duke was truly an extraordinary dog as he understood the needs of his master completely and  pushed him out of his depressed state. He understood that his master was not well and toned down his behaviour from his earlier boisterous self. He pushed his master out of bed and reignited in him an interest . He taught his master to walk again with infinite patience, painstaking care, and sensitivity which was very surprising in a dog.

Q2.In 1953, Hooper was a favoured young man.’ Explain.
It means that in the year 1953, Hooper had everything that he
could have ever wanted. He was a tall young man, with a healthy.
Muscular body. He was a member of the university football team.
Apart from that he had a well-paying job as a sales manager for a
chemical company. He also had a loving wife and a faithful dog
whose company he enjoyed very much.

Q3.Why do you think Hooper’s appointment as Assistant National
Manager is considered to be a tribute to Duke?
It was tribute because it was the result of Duke’s persistence, help,
support and love that Hooper regained an interest in life and
started working again and worked hard to prove that his disability
was not going to limit his aspirations and his ability to achieve his
goals.

EXTRACT BASED QUESTIONS
I.He was a 23-kilo missile of joy. He hit Chuck above the belt, causing him to fight to keep his balance.
Questions
(a) Who has been called a "missile of joy" ?
(b) How did he hit Chuck ? Why ?
(c) Why did Chuck find it difficult to maintain his balance ?
Answers
(a) Duke, the dog, has been called a "missile of joy".
(b) He hit Chuck in such a way that he lost his balance and nearly fell, but didn't. Duke did this all due to sheer joy.
(c) Chuck found It difficult to maintain his balance because he was just out of hospital. He was very weak.

II. When two fellows stare at each other day In, day out, and one can't move and the other can't talk boredom sets in. Duke finally couldn't take it.
Questions
(a) Who are the two fellows mentioned above ?
(b) Why can't one fellow In the above line move ?
(c) Why can't the other talk in these lines ?
Answers
(a) The dog named Duke and his master Chuck are mentioned here.
(b) One fellow, that is Chuck, can't move because he has met with a very serious accident.
 (c) The other is the dog which can't speak as dogs can't do so.

III. Those who saw it said the dog knew instantly. He never jumped on Chuck again. From that moment, he took up a post beside his master's bed around the clock. But even Duke's presence didn't reach Chuck. The once—iron muscles slacked on the rangy frame.
Questions
(a) What does 'rangy' frame mean here ?
(b) Why did Duke never jump on Chuck again ?
(c) Why even Duke's presence didn't reach Chuck ?
Answers
(a) It is stout and strong.
(b) Duke never jumped on Chuck again as he was a dog but was like a human being• He understood everything.
(c) Even Duke's presence didn't reach Chuck because he was under a great depression.

IV.  Duke felt the sudden slack in the leash and pulled it taut. Chuck swayed broke the fall with his good right leg, then straightened.
Questions
(a) When did Duke feel the sudden slack in the leash ?
(b)                        What did Chuck do then ?
(c)  What was the effect of what Chuck did on him ?
Answers
(a) Duke felt the sudden slack in the leash when Chuck dragged his left foot   giving looseness in the leash.
(b) Chuck swayed forward again and checked his fall with his good right leg.
(c) Chuck did all this three times and in that he felt exhausted.

V.  Thirteen months from the moment he worked full days, Chuck Hooper was promoted to regional manager covering more than four states
Questions
 (a) What helped Chuck Hooper achieve the promotion mentioned here ?
(b) What did Chuck's promotion reveal about the company's management ?
 (c) Who did Chuck owe his success to himself or Duke ?
Answers
(a) Chuck Hooper's recovery from a very serious accident helped him achieve this.
(b) It revealed that the company he served had real gentlemen who understood everything.
(c) He owed his success to Duke.

Short questions
Q. 1. Who was Charles-Chuck'-Hooper ? Where did he work and how did he look ?
Ans. Charles-'Chuck'-Hooper was zone sales manager of a chemical company. He was a favoured young man due to his competitive and result-oriented outlook. He had a big grin on his face. He was six-foot-one inch tall and looked smart. He had also played in the university football team.
Q. 2. One incident changed Hooper's life. What was the change ?
Ans. Hooper was the zone sales manager of a chemical company. He achieved everything he aspired for. But one evening when he was returning home, a car hit him. He got haemorrhage in the motor section of the brain. This completely paralysed his left making him a paralysed cripple.
Q. 3. Why was Duke put in a kennel
Ans. Charles was in hospital due to the accident. Due to the nature of his accident he needed Marcy to look after him. There was no one to take care of Duke at home. So he had to be put in a kennel.
Q. 4. How was Hooper involved in an accident ? How was he injured ?
Or  How was Chuck injured in the accident ?
Ans. Charles-'Chuck'-Hooper was driving home in one autumn twilight. A car suddenly pulled out in front of him without warning. He received very serious injuries in the brain leading to subdural hemorrhage, These paralyzed the left side of his body.
Q. 5. How did Hooper feel when he returned home after the hospital ?
Ans. Hooper returned home after about six weeks at the hospital. After the excitement homecoming wore off, Chuck got a bout of depression. When Marcy, his wife, went to each morning, he got all alone. That dispirited him and he went into depression•
Q. 6. Describe the first meeting between Hooper and Duke after Hooper is brought home from hospital. [V. Imp.J Ans. After Hooper was discharged he was brought home. Duke was at the kennel then. He was also brought home. Hooper had told that he would meet Duke standing. When Duke saw his master after a long period he quivered like 5000 volts and sprang up at him. Hooper
had to struggle to maintain his balance.
Q. 7. What happened when one evening Chuck's good hand idly hooked the leash onto Duke's collar ?
Ans. When Hooper did so, Duke understood that he was being called to go out for a walk. He shimmied himself and pranced. Hooper asked Marcy to support him by the elbow. He moved his right leg out in front. Then he straightened his right leg. It caused the left foot to drag forward alongside the right. Hooper had taken his first step.
Q. 8. How did Duke help Hooper to stand in the beginning and be on his own ?
Ans. Duke was instrumental in helping Hooper to walk again after his paralysis. One day Chuck hooked the leash into Duke's collar. He treated it as a signal to go out and pranced.
He then held the leash into his fingers. With Marcy's help he leaned forward. He straightened his right leg. This caused the left foot to drag forward. Hooper had taken his first step.
Q. 9. Describe how Hooper could walk with Duke's help after the beginning had been made.
 Ans. After the initial stage, Duke charged around to Hooper's good side, With Hooper standing, Duke walked to the end of the leash and tugged it steadily. They took four steps on the second day. On the following days Hooper would stand. Duke would keep the leash taut to balance him. This way Duke helped Hooper to take steps to the front porch. Then they went to the intersection quite far away.
Q. 10. How did Hooper's neighbours react to their walk when they had moved to their new house ?
Ans. Hooper's neighbours of their new house didn't know the story of Hooper and Duke.They only knew the gait of Hooper when he was out with Duke. They reacted saying that Hooper walked like a struggling mechanical giant. He was always pulled by the dog as if the dog owned him .







THE BROOK EXTRA QUESTIONS

THE BROOK EXTRA QUESTIONS
Q1:    Where does the brook begin?
 Place frequented by coots and herns.
Q2    Which is the last place to be visited by the brook?
A    Philip's farm is the last place to be visited by the brook. 
Q3 When is the brook specially noisy?
A    When it flows over stones.
Q4 What are the two things the brook is always doing?
A    Moving and making sounds are the two things the brook is always doing.
Q5Name some things that float down all streams (Use your imagination).
 Flowers, leaves, twigs, insects, fishes.
Q 6 Why is the water described as silvery?
A   The sun shines on the water making it sparkle like white silver.
Q 7 Why is gravel said to be golden?
A   It is yellow and brown in colour.
 Read the extracts given below and answer the Questions that follow 

I come from haunts of coot and tern,
I make a sudden sally,
And sparkle out among the fern,
To bicker down a valley.

a) What is the birth place of the Brook?

b) How does the Brook emerge after its birth?

c) Why does it 'bicker down a valley'?
    a)The birth place of the Brook is actually the haunt of water birds like the coot and the tern.

b)The Brook gushes out in a sudden sally after its birth.

c) It (the Brook) seems to bicker down a valley because it flows down a hilly terrain. When the water flows over such a terrain, it creates a lot of noise. This noise is described as 'bicker'.

By thirty hills I hurry down,
Or ship between the ridges
By twenty thropes, a little town,
And half a hundred bridges.

a) How does the Brook seem to move?

b) What are the things that the Brook passes by before it joins the brimming river?
  a) The Brook seems to move very hurriedly by hills and seems to slip between the ridges as it flows.

b) It passes hills, thropes, a little town, several bridges and Philip's farm before it joins the brimming river.
Q
I chatter over stony ways,
In little sharps and trebles,
I bubble into eddying bays,
I babble on the pebbles.

a) How does the brook flow on a stony path?

b) What is the figure of speech used in the last two lines?

  a) The Brook creates a chattering sound when it flows on a stony path.

b) The poet has used alliteration with the use of the consonant sound 'b'. This produces a musical sound effect.