Bacteria Test 4

Total Questions:50 Total Time: 75 Min

Remaining:

 

Questions 1 of 50

Question:Bacteria whose cell has only a curve/comma is

Answers Choices:

Vibrio

Cocci

Spirilli

Bacilli

Questions 2 of 50

Question:The main difference between Gram positive and Gram negative bacteria lies in the composition of

Answers Choices:

Cilia

Cell wall

Nucleolus

Cytoplasm

Questions 3 of 50

Question:Muramic acid is present in the cell wall of

Answers Choices:

Bacteria

Green algae

Yeast

Rhizopus

Questions 4 of 50

Question:On cell wall Mesosome in a bacterial cell is

Answers Choices:

Plasmid

Connection between two cells

Plasma membrane infolded for respiration

None of these

Questions 5 of 50

Question:Colourless, unicellular, cell wall bound, spherical or rod-shaped micro-organism and lacking organized nucleus is called

Answers Choices:

Mycoplasma

Virus

Bacteria

Cyanobacteria

Questions 6 of 50

Question:In E. coli when the flagella rotates in a clockwise and anticlockwise direction, the movements are

Answers Choices:

Jumping and hooping

Running and tumbling

Tumbling and hooping

Hooping and running

Questions 7 of 50

Question:Antony Van Leeuwenhoek was first discovered bacteria. He belongs to which country

Answers Choices:

France

Swedan

Holland

United Kingdom

Questions 8 of 50

Question:'Peptidoglycan' is a characteristic constituent of the cell wall of

Answers Choices:

Eubacteria and unicellular eukaryotes

Bacteria and cyanobacteria

Archaebacteria and eukaryotes

All members of 'monera' and 'protista'

Questions 9 of 50

Question:Bacteria and other monerans do not possess

Answers Choices:

Ribosomes

Mitochondria

Nucleoid

Plasma membrane

Questions 10 of 50

Question:When a bacterium is provided with flagella arising from two opposite ends, it is called

Answers Choices:

Monotrichous

Lophotrichous

Amphitrichous

Polytrichous

Questions 11 of 50

Question:Which one of the following is correct for structure of cell wall of fungi and bacteria

Answers Choices:

Both have glycopeptides

Both are made up of N-acetylglucosamine

Both are made up of N-acetylglucosamine and cellulose

Both are made up of chitin

Questions 12 of 50

Question:Bacteria commonly reproduce vegetatively by

Answers Choices:

Binary fission

Budding

Conjugation

Oidia

Questions 13 of 50

Question:Some bacteria are not easily killed because of

Answers Choices:

Chitinous wall

Endospore formation

Presence of mesosome

None of these

Questions 14 of 50

Question:The sexuality in bacteria was established by

Answers Choices:

Lederberg and Tatum

H. J. Muller

Hargobind Khorana

Ochoa and Kornberg

Questions 15 of 50

Question:On the basis of which activity of bacteria it has been proved for the first time that DNA is genetic material

Answers Choices:

Conjugation

Transformation

Transduction

Asexual reproduction

Questions 16 of 50

Question:The microbial conversion of ammonia to nitrate is called as

Answers Choices:

Ammonification

Nitrification

Denitrification

Nitrogen fixation (\({{\rm{N}}_{\rm{2}}}\)-fixation)

Questions 17 of 50

Question:The symbiotic nitrogen fixing bacteria present in root nodules of legumes belong to genus

Answers Choices:

Xanthomonas

Pseudomonas

Rhizobium

Acetobacter

Questions 18 of 50

Question:Bacillus megatherium is used in

Answers Choices:

Food poisoning

Food processing

Food manufacturing

None of the above

Questions 19 of 50

Question:Micro-organisms are used in

Answers Choices:

Sewage disposal

Biological control of diseases

Biological warfare

All the above

Questions 20 of 50

Question:Probiotics are

Answers Choices:

Safe antibiotics

Cancer inducing microbes

New kind of food allergens

Live microbial food supplement

Questions 21 of 50

Question:Bacteria which directly convert atmospheric nitrogen into nitrogen compounds are called

Answers Choices:

Denitrifying bacteria

Putrefying bacteria

Nitrogen fixing bacteria

Nitrifying bacteria

Questions 22 of 50

Question:Which of the bacterium is useful in preparing Idli

Answers Choices:

Leuconostoc mesenteroides

Clostridium

Both (1) and (2)

None of the above

Questions 23 of 50

Question:A substance that causes the disintegration of bacteria is

Answers Choices:

Bacterin

Barophile

Bacteriolysin

Bacteriocin

Questions 24 of 50

Question:Which bacteria is responsible for the reduction of nitrates into nitrogen, in soil

Answers Choices:

Nitrosomonas

Pseudomonas

Rhizobium

Clostridium

Questions 25 of 50

Question:Typhoid fever is caused by

Answers Choices:

Giardia

Shigella

Escherichia

Salmonella

Questions 26 of 50

Question:Proteins that kill the same or closely related species of bacteria are called

Answers Choices:

Bacteriolysin

Bacteriocin

Bacterin

Barophile

Questions 27 of 50

Question:"Crown gall" is caused by

Answers Choices:

Mycobacterium

Agrobacterium tumefaciens

Erwinia

Clostridium

Questions 28 of 50

Question:Which one is the smallest organism capable of autonomous growth and reproduction

Answers Choices:

Virus

Viroid

Mycoplasma

None of the above

Questions 29 of 50

Question:Little leaf of brinjal is caused by

Answers Choices:

Virus

Mycoplasma

Fungus

Algae

Questions 30 of 50

Question:Which of the following are called bacteria without cell wall

Answers Choices:

Virus

Viroid

Mycoplasma

Cyanobacteria

Questions 31 of 50

Question:Which of the following is osmotically fragile

Answers Choices:

Bacteria

Nostoc

Mycoplasma

None of these

Questions 32 of 50

Question:The disease of cardio-vascular system is caused by

Answers Choices:

Algae

Mycoplasma

Cyanobacteria

None of these

Questions 33 of 50

Question:Tendency of abortion in ladies is caused by

Answers Choices:

Cyanobacteria

Bacteria

Mycoplasma

None of these

Questions 34 of 50

Question:The membrane of which one of the following micro-organism is three layered

Answers Choices:

Nostoc

Mycoplasma

E. coli

Rhodospirillum

Questions 35 of 50

Question:PPLO reproduce (multiply) by

Answers Choices:

Gametic fusion

Binary fission

Akinetes

Endospore

Questions 36 of 50

Question:Organisms without any specific shape are

Answers Choices:

Mycoplasmas

Bacteria

Viruses

Cyanobacteria

Questions 37 of 50

Question:The matrix around Nostoc colony is

Answers Choices:

Gelatinous

Hard and corky

Cartilaginous

No matrix at all

Questions 38 of 50

Question:Angiosperm in which Nostoc remains endophyte is

Answers Choices:

Melia indica

Arachis hypogeal

Gunnera manicata

None of these

Questions 39 of 50

Question:Which of the following may occur in arctic and alpine meadows

Answers Choices:

Spirogyra

Ulothrix

Nostoc

None of these

Questions 40 of 50

Question:Single filament of Nostoc without mucilage sheath is known as

Answers Choices:

Hyphae

Colony

Trichome

Mycelium

Questions 41 of 50

Question:In which of the following there is no sexual reproduction

Answers Choices:

Ulothrix

Nostoc

Aspergillus

Volvox

Questions 42 of 50

Question:Which of the following algae is symbiotic and nitrogen fixing

Answers Choices:

Spirogyra

Cladophora

Anabaena

Oedogonium

Questions 43 of 50

Question:Cyanophyceae has got

Answers Choices:

Definite nucleus and plastid

No definite nucleus but plastid

Neither definite nucleus nor plastid

Definite nucleus but no plastid

Questions 44 of 50

Question:The following micro-organisms have the property of photosynthesis as well as nitrogen fixation

Answers Choices:

Azotobacter

Rhizobium

Cyanobacteria

Clostridium

Questions 45 of 50

Question:Unicellular cyanobacteria reproduce asexually by

Answers Choices:

Conjugation

Fragmentation

Binary fission

Hormogones

Questions 46 of 50

Question:Which was first photosynthetic organism

Answers Choices:

Green algae

Red algae

Cyanobacteria

Brown algae

Questions 47 of 50

Question:The blue-green algae are so called as they have in addition to green pigment chlorophyll, a blue pigment known as

Answers Choices:

Phycocyanin

Chromoplasm

Cyanophycin

Phycoerythrin

Questions 48 of 50

Question:Blue-green algae are included in

Answers Choices:

Eukaryotes

Rhodophyceae

Prokaryotes

Chlorophyceae

Questions 49 of 50

Question:Which of the following plants is used as biofertiliser

Answers Choices:

Nostoc

Funaria

Volvox

Rhizopus

Questions 50 of 50

Question:Pigment phycocyanin and phycoerythrin are found in

Answers Choices:

Bacillariophyceae

Archaebacteria

Eubacteria

Cyanobacteria

Chlorophyceae