SCIENCE : EXTRA QUESTIONS OF LESSON 2, 3, 4( CYCLE TEST 2)

EXTRA QUESTIONS

LIFE UNDER MICROSCOPE

( L- 4)

Q.1. Name the following:

1.  A bacterium that helps in curdling of milk.

2. A fungus used in preparation of antibiotics.

3. A microbe used in bread industry.

4. A microorganism used in production of alcohol.

5. Two diseases each caused by bacteria, fungi, protozoa and viruses.

6. The scientist who discovered penicillin.

7. Two food items prepared by using yeast.

8. Malaria causing organism.

9. An autotrophic protozoan.

10. An edible fungi.

Q. 2. Fill in the blanks:

1. ………….. are on the borderline of living and nonliving.

2. Vaccines employ use of weakened ……………………

3. ……………. is present in human intestine.

4. Vibrio is a ……………. shaped bacteria.

5. …………..is a unicellular fungus.

6. Roots  like structure of fungi are called as ……………

7. ……….is a filamentous alga.

8…………is a hormone which has been produced by GM bacteria and is used to control blood and sugar level.

9. …………., ………..diseases can be prevented by vaccination.

10. Proteins extracted from single celled algae, yeasts, fungi and bacteria are called as ……………….

Q.3. Give reasons:

1. Food poisoning incidences are more in rainy season.

2. Doctors advise not to eat stale food.

3. Food preservation is essential.

4. Algal blooms result in death of aquatic organisms.

5. Vaccines are given at the time of birth.

CELLS – THE BUILDING BLOCKS  OF LIFE

LESSON -2

Q.1. Name the following:

1. Functional unit of DNA.

2. Instrument used to observe tiny objects.

3. Scientist who discovered cell.

4. Control centre of cell.

5. Undefined nuclear region of prokaryotic cell.

6. An enucleate cell.

7. Outermost covering of animal cell.

8. Jelly like substance between cell membrane and nucleus.

9. Suicidal bags of cell.

10. Founders of cell theory.

Q.2. Fill in the blanks:

1. Chloroplast is absent from ……………..cells.

2. ………….has ribosomes attached to it.

3. Cell wall is present in …………….cells.

4. Plasma membrane is formed of …………… and …………….

5. ………….and ………….are single celled organisms.

6. …………stiffens the plant to stand erect.

7……………is called living content of cell.

8. Plant cell wall is made up of ………

9. DNA stands for ………………………………………………..

10. ………….are the sites of protein synthesis.

11. ……….are the plastids which store products starch.

Q.3. Give reasons:

1. What will happen to a cell if its nucleus is removed?

2. Plasma membrane is called as selectively permeable membrane.

3. Plastids are called as “Kitchen of plant cells” .

4. Mitochondria are called as power house of the cell.

5. Lysosomes are called as suicidal bags of the cell.

TISSUES : CELLS IN UNISON

( Lesson – 3)

Q.1. Name the following:

1. Meristem located at root and shoot apex.

2. Supporting cells for neurons.

3. Two proteins of muscle cells.

4. An avascular tissue.

5. Animals which lack presence of tissues and organ systems

6. Cells which do not undergo replacement or repair in human body after birth.

7. A protective tissue in plants which is dead.

8. Tissue which forms endoskeleton of the body.

9.  A living conductive tissue in plants.

10.Meristems found at the base of internodes.

Q.2. Fill in the blanks:

1. ………..is the unit of nervous tissue.

2. ………..carry messages towards cell.

3. Connective tissue with fluid matrix is …………….

4. Tissue that forms inner lining of mouth is ………………

5. ……connects muscles to bones.

6. ……………muscle control movement of urinary bladder, uterus.

7…………..is the gelatinous layer on which rests epithelial cells.

8. ……………..is an aggregation of cells that are similar in structure , functions or both.

9…………..are the tissues that stores fats.

10. Tissues that secrete number of important substances like hormones and enzymes………………….

Q.3. Give reasons:

1. Skeletal muscle is called as striated muscle .

2. Cardiac muscles are called as involuntary muscles.

3. Sclerenchyma cells are dead.

4. Muscles  have the property to contract.

5. What is the need for cells and  tissues specialisation. ?

W S----Earth’s Farm House

Q I Identify the terms explained below:
1. All types of plant life that grow under natural conditions are known as –
natural vegetation.
2. Large geographical expanse is known as – biome.

Q II Identify the animals given below. Name the continent they are found in. Give
reasons what makes the wildlife of this continent unique
Animals: Koala, Kangaroo, Kookaburra, Emu.
Continent: Australia.
Reasons for unique wildlife: Both geologic and climatic events helped to
make Australia's fauna unique. Australia was once part of the southern
supercontinent Gondwana . The establishment and evolution of the presentday
fauna was apparently shaped by the unique climate and the geology of
the continent. As Australia drifted, it was, to some extent, isolated from the
effects of global climate change. The unique fauna that originated in
Gondwana, such as the marsupials, survived and adapted in Australia. This
continental boundary prevented the formation of land bridges and resulted in
a distinct zoological distribution

Q IV The picture given below depicts the original forest cover on the earth and the
recordings of the cover in 2005. Observe the picture and answer the following
questions
1. In comparison to the original forest cover, the forest cover in 2005 has
decreased. (increased/decreased)
2. Give any two reasons for degradation of natural vegetation. – deforestation,
natural disasters, overgrazing, forest fires.
3. What is the result of this degradation?
It has led to barren hill slopes, increased surface runoff, soil erosion, reduced
underground water table, decrease in rainfall, destruction of habitat of wild
animals and extinction of many species.

कारक

a. What is industrial revolution?

Industrial Revolution is the process of rapid change that chiefly replaced

an agrarian, handicraft economy by industry and machine manufacturing.

b. When and where was the Tata Iron and steel company founded?

In 1907, theTata Iron and Steel Company (TISCO) and township carved

from the jungle named Sakchi, near the confluence of the Subarnarekha and the Khorkai rivers.
Q III HOTS question

What was the major cause of the decline of the Indian textile industry?

The technological innovations and the development of cotton industry in


Britain affected Indian textile industry greatly.

Fundamental Rights and Duties

QII Give word for the following:
 Bonded labour, people begging for alms. Beggar
 Buying and selling of human beings. Trafficking
 Protection provided by the government against any exploitation. Constitutional remedies. 
 Rights of an individual or a group that is necessary for the existence of a just and equal society. Human rights.

Why women in many countries were not given the right to vote?

Women were second-class citizens. Women were expected to restrict their
sphere of interest to the home and the family. They were not encouraged to
obtain a real education or pursue a professional career. After marriage, women
did not have the right to own their own property, keep their own wages, or sign a
contract. In addition, all women were denied the right to vote.

Q V Mark the following as true or false:

a. At present Indian citizen enjoys ten fundamental rights ( False)

b. Fundamental rights and duties should go hand in hand ( true)

c. The constitution has abolished the practice of untouchability ( True)

d. All religions are considered equal in India (True )

Colonialism and Urbanisation

QI Read the statements and write if they are true or false.

1. The old city of Shahjahanabad had excellent system of water supply and drainage system True

2. The first train service started from Mumbai to Calcutta in 1853.False

3. The cantonment is a military garrison or a camp. True

4. The English East India Company came to India as a trading organisation. True

5. In 1803, the city Delhi was captured by the British after defeating the Marathas. True

a. Identify the person in the picture.

King George V

b. Which ceremony was held in Delhi with regards to this King?

A darbar was held in Delhi, in 1911, to commemorate the crowing of King George V in England.

c. Who was made responsible for the architecture of Delhi?

Two architects, namely, Sir Edwin Lutyens and Herbert Baker were entrusted with the responsibility to design New Delhi.

Q III What was the importance of Shimla?

Shimla is the capital town of Himachal Pradesh. The British built it on land

they retained after the Gurkha War of 1814–16. It became the strategic

outpost of the British which was used for resting troops. The British partly

conducted their administration from Shimla which also served as the

summer capital of colonial India

Q IV HOTS question

How did prominent Indian merchants establish themselves in the colonial city?

Prominent Indian merchant establish themselves in colonial city in

different phases. They establish themselves in all the three metro colonial

cities i.e., Madras (Channai), Bombay (Mumbai) and Calcutta (Kolkata).

The Indian merchants tried to establish their relation of the agents of the

company. As the cities were trade centre and administrative centers l.

Therefore the Indian merchants could easily establish a relation with the

Europeans.

S.st W S The Great Uprising of 1857

QI Fill in the blanks:

1. The revolt of 1857 has also been referred to as the first war of

2. Mangal Pandey refused to use greased cartridge.

3. 3. The sepoys the Meerut regiment captured Delhi and declared Bahadur

4. Lord Dalhousie introduced the Doctrine of Lapse.

Q II View the video on the given link and answer the questions:

a. Who attacked the British regiment?

b. What led to the uprising of 1857?

independence.

Shah Zafar as the emperor of India.

c. What was the name of this revolt?

1. Mangal Pandey
2. Discontent and unrest and the exploitation of soldiers led to the uprising of 1857.
3. Sepoye mutiny.

 Q IV Unjumble the given words:

YSOPES - SEPOYS

MYTUIN - MUTINY

DTRIGCEAS – CARTRIDGES

BNERLILO - REBELLION

Q V HOTS question

Why was Bahadur Shah Zafar declared the leader for the uprising even 

though he was weak?

The first War of Independence in India started in 1857 under the leadership

of Bahadur Shah Zafar. He was appointed as the Commander-in-Chief by

the freedom fighters. Despite the failure of the revolt the revolutionaries

considered Bahadur Shah Zafar as the Emperor of India. 

वचन