The payment was collected by the hardworking salesman.
A
The hardworking salesman collected the payment.
B
the salesman who worked heard was able to collect the payment.
C
to collect the payment the salesman had to work hard.
D
The hardworking salesman was able to collect the payment.
Question 4Single Answer
I had to stop all my work to complete this project.
A
All other work had to be stopped to complete this project by me
B
For completing this project all other work must be stopped
C
For completing this project I had to stop all my work
D
To complete this project all other work had been stopped by me
Question 5Single Answer
They have published the names of all the successful candidates.
A
The candidates who have succeeded their names they had published.
B
The names of all the successful candidates have been published by them
C
The candidates who have succeeded their names have been published by them.
D
The names of all the successful candidate were published by them.
Question 6Single Answer
The online shopping site lowered the prices.
A
Lowering of the prices was done by the online shopping site
B
The prices were lowered by the online shopping site
C
The prices had been lowered by the online shopping site
D
The prices have been lowered by the online shopping site
Question 7Single Answer
Who taught you to drive a truck ?
A
To drive a truck by whom were you taught?
B
Driving a truck by who were you taught?
C
Driving a truck by who were you being taught?
D
By whom were you taught to drive a truck?
Question 8Single Answer
We shall invite Suresh.
A
Suresh would be invited by us
B
Suresh would have been invited by us
C
Suresh will be invited by us
D
Suresh will have been invited by us
Question 9Single Answer
Dark clouds have overcast the evening sky.
A
By the dark clouds the evening sky was overcast.
B
The evening sky has been overcast by the dark clouds.
C
Dark clouds overcastted the evening sky.
D
The sky of the evening was overcasted by dark clouds.
Question 10Single Answer
The partners will celebrate their triumph tomorrow.
A
The triumph would be celebrated by the partners a day before
B
The triumph would be celebrated by the partners a day after
C
The triumph would have been celebrated by the partners a day after
D
The triumph will have been celebrated by the partners tomorrow
Question 11Single Answer
Why did break the vase?
A
why is the vase broken by him
B
why was the vase broken by him
C
why had been the vase broken by him
D
why has been the vase broken by him
Question 12Single Answer
Mariam was writing a note to her boss.
A
A note was written to her boss by Mariam
B
A note was wrote by Mariam to her boss
C
A note was being written by Mariam to her boss
D
A note was written by Mariam to her boss
Question 13Single Answer
The baby really enjoys that music.
A
That music was really enjoyed by the baby.
B
That music was really being enjoyed by the baby.
C
That music is really enjoyed by the baby.
D
This music was really enjoyed by the baby.
Question 14Single Answer
The weather disrupted the final match.
A
The final match has been disrupted by the weather.
B
The final match had been disrupted by the weather.
C
The final match was disrupted by the weather.
D
The final match was being disrupted by the weather.
Question 15Single Answer
The management committee is required to publish a report every year.
A
report would be published by the management committee every year.
B
A report would have been published by the management committee every year.
C
A report requires to be published by the management committee every year.
D
Every year the report would be published by the management committee.
Question 16Single Answer
शुद्ध वर्तनी का चयन कीजिए
A
अधम्र
B
अध्रम
C
अधर्म
D
अध्रिम
Question 17Single Answer
शुद्ध वर्तनी का चयन कीजिए
A
स्थायि
B
स्थायी
C
स्थाई
D
स्थाइ
Question 18Single Answer
वर्तनी की दृष्टि से सही शब्द है?
A
महत्व
B
महतव
C
महत्तव
D
महतत्व
Question 19Single Answer
निम्नलिखित में से शुद्ध छांटिए?
A
आयुष्मान
B
आयुश्मान
C
आयुशमान
D
आयुश्यमान
Question 20Single Answer
शुद्ध शब्द नहीं हैं?
A
कवियत्री
B
कौसल्या
C
एश्वर्य
D
श्रृंगार
Question 21Single Answer
शुद्ध वर्तनी है -
A
पूज
B
पुजय
C
पूज्य
D
पुज्य
Question 22Single Answer
शुद्ध वर्तनी है -
A
अनुसरण
B
अनूशरणन
C
अनुशरण
D
अणुशर
Question 23Single Answer
किस क्रमांक में सभी शुद्ध हैं?
A
एक्य,साप्ताहिक
B
आजीविका,आशीर्वाद
C
आर्शिवाद ,अनूकूल
D
निरिक्षण ,कृपालु
Question 24Single Answer
'उज्वल' शब्द का शुद्ध रूप है ?
A
उज्जव
B
उज्ज्ल
C
उज्ज्वल
D
उजवल
Question 25Single Answer
निम्नलिखित प्रश्न में चार वैकल्पिक वर्तनियाॅ दी गई है?
A
जागृत
B
जाग्रति
C
जाग्रित
D
जाग्रत
Question 26Single Answer
निम्नलिखित प्रश्न में चार वैकल्पिक वर्तनियाॅ दी गई है?
A
उन्नति
B
उनति
C
उन्ती
D
उनती
Question 27Single Answer
निम्नलिखित प्रश्न मे चार वैकल्पिक वर्तनियाॅ दी गई है?
A
अनुशहरण
B
अनोसरण
C
अनुसरन
D
अनुसरण
Question 28Single Answer
'पृथ्वीराज रासो' किस काल की रचना है ?
A
आदिकाल
B
रीतिकाल
C
भक्तिकाल
D
आधुनिक काल
Question 29Single Answer
हिन्दी की उत्पत्ति किस भाषा से हुई है?
A
प्राकृत
B
संस्कृत
C
शौरसैनी अपभ्रंश
D
मागधी
Question 30Single Answer
राजभाषा आयोग के प्रथम अध्यक्ष थे ?
A
बी. जी. खरे
B
राजा लक्ष्मण सिंह
C
प्रताप नारायण मिश्र
D
इंशाअल्ला खा
General Studies
Question 31Single Answer
Yojna a weekly journal
A
Ministry of Finance
B
Ministry of Information and Broadcastin
C
Ministry of Rural Development
D
Planning Commission
Question 32Single Answer
Kurukshetra a journal on rural development is published by
A
Ministry of Finance
B
Ministry of Information and Broadcastin
C
Ministry of Rural Development
D
Planning Commission
Question 33Single Answer
How many such pairs of letters are there in the word ‘CLEANLINESS’ each of the which has as many letters between them in the word as they have in the English alphabet, in the same sequence?
A
Two
B
Three
C
Five
D
Four
E
None of these
Question 34Single Answer
Team A has scored more goals than Team B
Team C has scored fewer goals than Team B
Team A has scored fewer goals than Team C .
If the first two statements are true, the third statement is
A
True
B
False
C
Uncertain
D
None
Question 35Single Answer
If it is possible to make only one meaningful word with the second, the third, the sixth and the eight letters of the word FRAGMENT using each only once, which of the following will be the third letter of that word ? If no such word can be formed, give ‘X’ as the answer and if more than one such word can be formed, give ‘Y’ as the answer.
A
A
B
E
C
T
D
X
E
Y
Question 36Single Answer
How many such letters are there in the word ORIENTAL each of which is as far away from the beginning of the word as when they are arranged alphabetically?
A
None
B
One
C
Two
D
Three
E
More than three
Question 37Single Answer
How many such pairs of letters in the word CREDIT each of which has as many letters between them in the word as in the English alphabet?
A
None
B
One
C
Two
D
Three
E
More than three
Question 38Single Answer
The cash difference between the selling prices of an article at a profit of 4% and 6% is Rs. 3. The ratio of the two selling prices is:__________ ?
A
51:52
B
52:53
C
51:53
D
52:55
Question 39Single Answer
Which of the following numbers is irrational ?
A
√49
B
0.125
C
√2
D
22/7
Question 40Single Answer
356 x 936 – 356 x 836 = ?
A
35600
B
34500
C
9630
D
93600
Question 41Single Answer
Arrange in descending order: 5/8, 7/10, 3/4
A
3/4 > 7/10 > 5/8
B
7/10 > 3/4 > 5/8
C
3/4 > 5/8 > 7/10
D
5/8 > 7/10 > 3/4
Question 42Single Answer
What is (3^{4} times 9^{2}) ?
A
36
B
38
C
310
D
96
Question 43Single Answer
Temperature can be expressed as derived quantity in terms of
A
length and mass
B
mass and time
C
length, mass and time
D
None of these
Question 44Single Answer
Electron volt is a unit of
A
potential difference
B
charge
C
energy
D
capacity
Question 45Single Answer
Which of the following is not a synthetic fibre:
A
Anygora
B
Rayon
C
Nylon
D
Polyster
Question 46Single Answer
Which one of the following is not contained in Portland cement ?
A
Ca3Al2O6
B
Ca3SiO5
C
Ca2SiO4
D
Ca3(PO4)2
Question 47Single Answer
Which of the following contain enzymes for cellular respiration ?
A
Dictyosomes
B
Endoplasmic reticulum
C
lysosomes
D
Mitochondria
Question 48Single Answer
Who was the real founder of Turk rule in Bihar ?
A
Ibn Bakhtiyar Khilji
B
Ibrahim
C
Dariya Khan Noohani
D
Malik Husamuddin
E
None of the above / More than one of the above
Question 49Single Answer
Which is the national game of Bhutan ?
A
badminton
B
basketball
C
football
D
archery
Question 50Single Answer
When was the Constituent Assembly of India formed?
A
1946
B
1947
C
1948
D
1950
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General Studies
Question 51Single Answer
Who is known as the "Father of the Indian Renaissance" ?
A
Raja Ram Mohan Roy
B
Swami Vivekananda
C
Rabindranath Tagore
D
Mahatma Gandhi
Question 52Single Answer
Which is the longest river in India?
A
Yamuna
B
Ganges
C
Brahmaputra
D
Godavari
Question 53Single Answer
The Western Ghats are also known as:
A
Sahyadris
B
Vindhyas
C
Satpuras
D
Aravallis
Question 54Single Answer
Which river is known as the ‘Sorrow of Bihar’?
A
Ganges
B
Kosi
C
Son
D
Gandak
Question 55Single Answer
Which mountain range separates Northern India from Southern India?
A
Aravallis
B
Vindhyas
C
Eastern Ghats
D
Himalayas
Question 56Single Answer
The Deccan Plateau is bordered by which two mountain ranges?
A
Himalayas and Western Ghats
B
Western Ghats and Eastern Ghats
C
Vindhyas and Satpuras
D
Aravallis and Satpuras
Question 57Single Answer
Who was the first European power to arrive in India?
A
The Dutch
B
The French
C
The English
D
The Portuguese
Question 58Single Answer
Vasco da Gama reached India in which year?
A
1498
B
1492
C
1500
D
1510
Question 59Single Answer
Which city did Vasco da Gama first land in India?
A
Goa
B
Cochin
C
Calicut
D
Surat
Question 60Single Answer
Which European power established trading posts in Malabar before others?
A
Dutch
B
Portuguese
C
French
D
English
Question 61Single Answer
Which European power controlled Ceylon and Malacca during early 17th century?
A
Dutch
B
Portuguese
C
English
D
French
Question 62Single Answer
Environmental Science is best defined as?
A
Study of interaction between physical, chemical and biological components of environment
B
Study of only plants
C
Study of only atmosphere
D
Study of only animals
Question 63Single Answer
The scope of Environmental Science includes?
A
Interdisciplinary study of environment and its components
B
Only chemistry
C
Only geology
D
Only physics
Question 64Single Answer
The main principle of Environmental Science is?
A
Isolation of ecosystem
B
Interdependence of living and non-living components
C
Human dominance over nature
D
Independent functioning of species
Question 65Single Answer
Environment includes?
A
Only biotic factors
B
Only abiotic factors
C
Only humans
D
Both biotic and abiotic factors
Question 66Single Answer
What is the name of the next phase of India’s semiconductor programme notified by the Government in August 2026?
A
Chip India 3.0
B
India Chip Mission
C
Semicon 2.0
D
Semiconductor Bharat
Question 67Single Answer
The Constituent Assembly of India was constituted under the provisions of which plan?
A
Cabinet Mission Plan
B
Cripps Mission
C
Mountbatten Plan
D
Wavell Plan
Question 68Single Answer
The Constituent Assembly held its first meeting on?
A
15 August 1947
B
9 December 1946
C
26 November 1949
D
26 January 1950
Question 69Single Answer
Who was the temporary Chairman of the Constituent Assembly?
A
Rajendra Prasad
B
B. R. Ambedkar
C
Sachchidananda Sinha
D
Jawaharlal Nehru
Question 70Single Answer
Who was elected permanent President of the Constituent Assembly?
A
Jawaharlal Nehru
B
B. R. Ambedkar
C
Vallabhbhai Patel
D
Rajendra Prasad
Concerned Subject (Botany)
Question 71Single Answer
Plant viruses usually contain :
A
RNA
B
DNA
C
DNA and RNA
D
DNA or RNA
Question 72Single Answer
Viruses were discovered by :
A
Stanley
B
Ivanowski
C
Twort
D
Herelle
Question 73Single Answer
Which statement best defines viruses?
A
Acellular infectious agents that replicate only inside living host cells
B
Cellular microorganisms containing only DNA
C
Free-living microorganisms capable of independent metabolism
D
Cellular microorganisms containing only RNA
Question 74Single Answer
Which infectious agents consist essentially of small, naked RNA molecules without a protein coat?
A
Virions
B
Prions
C
Viroids
D
Bacteriophages
Question 75Single Answer
Coliphage f X 174 contains :
A
double stranded RNA
B
single stranded DNA
C
double stranded DNA
D
single stranded RNA
Question 76Single Answer
Viruses differ from living organisms in that, they :
A
can grow inside a living host
B
can multiply inside a living host
C
can undergo mutation inside a living host
D
are non-cellular
Question 77Single Answer
Virus which attacks E.coli is called :
A
bacteriophage
B
coliphage
C
phytophage
D
zoophage
Question 78Single Answer
Which characteristic distinguishes viruses from cellular organisms?
A
They possess ribosomes for protein synthesis
B
They have independent energy metabolism
C
They are acellular and depend on host cells for replication
D
They reproduce by binary fission
Question 79Single Answer
The genome of a temperate bacteriophage integrated into the bacterial chromosome is termed as?
A
Prophage
B
Episome
C
Plasmid
D
Capsomere
Question 80Single Answer
Virus was crystallized and isolated first by :
A
J.D. Ivanowski
B
F.C. Bawden
C
W.M. Stanley
D
K.M. Smith
Question 81Single Answer
Little leaf disease of brinjal is primarily associated with which pathogen?
A
Phytoplasma
B
Begomovirus
C
Fungus
D
Viroid
Question 82Single Answer
Which approximate size range includes many of the smallest known conventional virus particles?
A
20–30 nm
B
100–150 nm
C
500–700 nm
D
1–2 µm
Question 83Single Answer
Which of the following is devoid of protein coat, with a constitution of RNA only ?
A
Tobacco mosaic virus
B
Poxvirus
C
Potato spindle tuber virus
D
None of the above
Question 84Single Answer
Genetic modification brought about by a virus in a bacteria is known as :
A
transformation
B
transduction
C
conjugation
D
candidiasis
Question 85Single Answer
Which property makes the classification of viruses as strictly living or non-living problematic?
A
They reproduce independently outside cells
B
They possess cellular organelles but lack DNA
C
They replicate in host cells but are metabolically inactive outside them
D
They perform independent respiration outside host cells
Question 86Single Answer
Influenza viruses contain which type of genetic material?
A
Double-stranded DNA
B
Single-stranded RNA
C
Single-stranded DNA
D
Double-stranded RNA
Question 87Single Answer
Edward Jenner is best known for pioneering vaccination against which disease?
A
Smallpox
B
Chickenpox
C
Rabies
D
Poliomyelitis
Question 88Single Answer
Roux Sarcoma virus contains :
A
RNA
B
DNA
C
DNA and RNA
D
None of these
Question 89Single Answer
Which of the following is a viral disease of potato ?
A
Early blight of potato
B
Late blight of potato
C
Leaf roll of potato
D
None of the above
Question 90Single Answer
The term Virus' has been derived from a Latin word meaning :
A
poison
B
secretion
C
cell
D
venom
Question 91Single Answer
Which of the following is an example of DNA containing plant virus ?
A
Tobacco mosaic virus
B
Potato mosaic virus
C
Cauliflower mosaic virus
D
Tomato mosaic virus
Question 92Single Answer
Rabies is caused by :
A
viruses
B
slime moulds
C
fungi
D
bacterium
Question 93Single Answer
A clear area produced when bacteriophages lyse bacterial cells growing on a culture medium is called a?
A
Plaque
B
Colony
C
Streak
D
Capsule
Question 94Single Answer
An antiviral substance produced by many vertebrates in response to viral infection for resisting the multiplication of viruses is known as :
A
antivirin
B
antigen
C
virion
D
interferon
Question 95Single Answer
Viruses with two types of symmetry, i.e., icosahedral head and helical tail are called :
A
picornaviruses
B
binal viruses
C
riboviruses
D
none of these
Question 96Single Answer
Which of the following is a Capsid ?
A
Protein part of virus
B
Nucleic part of virus
C
Both (a) and (b)
D
None of these
Question 97Single Answer
A stage in the replication of virus, when the cell wall of host is ruptured is known as :
A
lesion
B
lysis
C
autolysis
D
haemolysis
Question 98Single Answer
Which metabolic capability is absent in viruses?
A
Independent ATP-generating metabolism
B
Genetic mutation
C
Genome replication within a suitable host
D
Assembly of progeny virions inside host cells
Question 99Single Answer
The exception to the cell theory of Schleiden and Schwann are :
A
viruses
B
bacteria
C
algae
D
fungi
Question 100Single Answer
An extreme example of latency in which the DNA of the phage is integrated with the DNA of host cell chromosome is :
A
lysis
B
lysogeny
C
prophage
D
attenuated virus
Question 101Single Answer
Which feature is characteristic of all viruses?
A
They require living host cells for replication
B
They contain proteins but no nucleic acid
C
They replicate exclusively in the cytoplasm
D
They infect only bacterial cells
Question 102Single Answer
One of the following discovered synthesis of DNA from RNA in Roux Sarcoma Virus :
A
Smith
B
Temin
C
Twort
D
Mayer
Question 103Single Answer
Which component is present in both a bacteriophage and a yeast cell?
A
Nucleic acid
B
Mitochondria
C
Golgi apparatus
D
Endoplasmic reticulum
Question 104Single Answer
Transduction was discovered by :
A
Safferman and Morris
B
Lederberg and Zinder
C
Smith and Knight
D
None of these
Question 105Single Answer
Viral DNA incorporated in host DNA is known as :
A
prophage
B
vegephage
C
cyanophage
D
phycophage
Question 106Single Answer
Most antibiotics have no direct effect on viruses primarily because?
A
Viruses form antibiotic-resistant endospores
B
Viruses are larger than bacterial cells
C
Viruses lack the cellular structures and metabolic pathways targeted by antibiotics
D
Viruses possess impermeable cellulose walls
Question 107Single Answer
Dahlia mosaic virus contains :
A
DNA
B
RNA
C
DNA and RNA
D
None of these
Question 108Single Answer
The disease in man caused by viruses is :
A
mumps
B
cholera
C
typhoid
D
plague
Question 109Single Answer
Where is the protein for protein coat of virus synthesized ?
A
RNA of the virus
B
DNA of the virus
C
RNA of the host
D
Ribosome of the host
Question 110Single Answer
A virus contains
A
an outer protein coat and a central core of DNA or RNA
B
outer RNA or DNA and a central core of proteins
C
only nucleic acids
D
only protein coats
Question 111Single Answer
Which of the following does not contain DNA ?
A
T-2 bacteriophage
B
Dahlia mosaic virus
C
Roux sarcoma virus
D
All animal viruses
Question 112Single Answer
Which tissue-culture technique is commonly used to obtain virus-free plants from systemically virus-infected stock?
A
Shoot apical meristem culture
B
Mature xylem culture
C
Mature phloem culture
D
Pollen storage
Question 113Single Answer
Which property provides evidence for the biological activity of viruses inside suitable host cells?
A
Replication of their genetic material
B
Independent cellular respiration
C
Independent protein synthesis by ribosomes
D
Binary fission outside host cells
Question 114Single Answer
In classical virus classification, a cryptogram was designed primarily to provide coded information about which features?
A
Major properties of a virus and its genome
B
Only the colour of infected tissues
C
Only the geographical origin of a virus
D
Only the name of the virus discoverer
Question 115Single Answer
Which term describes a genetic element capable of existing autonomously as well as becoming integrated into a host chromosome?
A
Episome
B
Capsomere
C
Virion
D
Viroid
Question 116Single Answer
Tissue culture is used in research of...... extensively .
A
fungi
B
bacteria
C
algae
D
viruses
Question 117Single Answer
The protein coat of a virus is made up of
A
capsid
B
episome
C
protein
D
capsomeres
Question 118Single Answer
Which of the following is not a viral disease of man ?
A
Influenza
B
Whooping cough
C
Rabies
D
Small pox
Question 119Single Answer
Double stranded RNA viruses are known as :
A
riboviruses
B
reoviruses
C
ribovira
D
arboviruses
Question 120Single Answer
The viruses that infect blue green algae are called :
A
cyanophages
B
phages
C
phycophages
D
coliphage
Question 121Single Answer
Which region of a plant is commonly exploited in meristem culture to obtain virus-free plants?
A
Shoot apical meristem
B
Mature phloem
C
Secondary xylem
D
Cork cambium
Question 122Single Answer
Which size range broadly encompasses many conventional virus particles?
A
About 20–300 nm
B
About 2–10 nm
C
About 1–5 µm
D
About 10–50 µm
Question 123Single Answer
A viral DNA can be made radioactive by :
A
culturing the viruses in a medium of P32
B
by providing P3² to a bacterium infected by a virus
C
by providing P32 to viruses when they are about to attack a bacteria
D
Both (a) and (c)
Question 124Single Answer
Which of the following is generally the largest in virion dimensions?
A
Tobacco mosaic virus
B
Poxvirus
C
Herpesvirus
D
Poliovirus
Question 125Single Answer
Who first reported bacteriophages in 1915?
A
Félix d'Hérelle
B
Alfred Hershey
C
Joshua Lederberg
D
Frederick W. Twort
Question 126Single Answer
"DNA is the hereditary material of bacteriophages" was proved by :
A
Hershey and Chase
B
De Herelle
C
F. Griffith
D
De Barley
Question 127Single Answer
The genetic material of poliovirus is :
A
DNA
B
Single stranded RNA
C
Single stranded DNA
D
Double stranded RNA
Question 128Single Answer
The genome of a temperate bacteriophage integrated into the bacterial chromosome is called a?
A
Virion
B
Prophage
C
Capsomere
D
Plasmid
Question 129Single Answer
In a bacteriophage, DNA is located in its
A
head
B
tail
C
tail and head
D
tentacles
Question 130Single Answer
Animal viruses enter their host cell by a process known as
A
pinocytosis
B
viropexis
C
lysis
D
elimination
Question 131Single Answer
If a virus has RNA instead of DNA :
A
It cannot replicate
B
It cannot reproduce
C
RNA acts as genetic material
D
It can direct protein synthesis only
Question 132Single Answer
Why is vegetative propagation particularly important in the transmission of many plant viruses?
A
Infected vegetative material can directly carry viruses into new plants
B
All plant viruses are transmitted exclusively through seeds
C
Viruses survive only in dead plant tissues
D
Plant viruses cannot occur in vascular tissues
Question 133Single Answer
Which cyanophage is known for infecting cyanobacteria belonging to more than one host genus?
A
T2 phage
B
Lambda phage
C
LPP-1
D
M13 phage
Question 134Single Answer
Mosaic disease of sugarcane is caused by :
A
parasitic alga
B
bacterium
C
fungus
D
virus
Question 135Single Answer
A substance that kills viruses is :
A
viricide
B
virion
C
antibiotic
D
germicide
Question 136Single Answer
In a virus infected plant, the viruses are translocated through :
A
xylem vessels
B
sieve tubes
C
phloem vessels
D
cortex
Question 137Single Answer
Who first crystallized tobacco mosaic virus?
A
Wendell M. Stanley
B
Frederick W. Twort
C
Félix d'Hérelle
D
Dmitri Ivanovsky
Question 138Single Answer
Which statement about viruses is incorrect?
A
Their genomes consist of DNA or RNA
B
They can grow independently in a sugar solution
C
They require host cells for replication
D
They lack independent cellular metabolism
Question 139Single Answer
During infection of Escherichia coli by bacteriophage T2, which viral component enters the bacterial cell?
A
Only the protein coat
B
Primarily the phage DNA
C
The entire intact bacteriophage
D
Only the tail fibers
Question 140Single Answer
Acquired Immuno-Deficiency Syndrome is caused by :
A
Influenza Virus
B
Oncoenes
C
HIV
D
Mycobacterium
Question 141Single Answer
Mosaic of sugarcane is caused by :
A
algae
B
fungi
C
bacteria
D
virus
Question 142Single Answer
Which statement about viruses is incorrect?
A
They lack independent energy metabolism
B
They require living cells for replication
C
Their genome consists of DNA or RNA
D
They can grow independently in a dilute sugar solution
Question 143Single Answer
Which feature of bacteriophages made them particularly useful in classic experiments on the nature of genetic material?
A
Their DNA and protein components could be differentially labelled
B
They possess mitochondria
C
They reproduce by binary fission
D
They contain chlorophyll
Question 144Single Answer
For successful study of Morphology of viruses the Microscope used is :
A
polarizing
B
binocular
C
electron
D
simple
Question 145Single Answer
Which type of nucleic acid is found as the genome in many characterized mycoviruses?
A
Single-stranded DNA only
B
Double-stranded RNA
C
Double-stranded DNA only
D
Transfer RNA
Question 146Single Answer
Outside of the host cells, the viruses are simply non-living particles, known as :
A
virion
B
prophages
C
proviruses
D
algae
Question 147Single Answer
What is the genetic material of typical tailed cyanophages?
A
Double-stranded DNA
B
Protein
C
Ribosomal RNA
D
Transfer RNA
Question 148Single Answer
Which of the following disease is caused by a virus ?
A
Tuberculosis
B
Poliomyelitis
C
Diphtheria
D
Typhoid
Question 149Single Answer
Which feature historically contributed to bacteria being grouped with plants in older classification systems?
A
Presence of a rigid cell wall
B
Presence of a membrane-bound nucleus
C
Presence of chloroplasts in all species
D
Multicellular organization
Question 150Single Answer
Which environment typically contains an exceptionally diverse and abundant community of bacteria?