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4

The pigment similar to chlorophyll found in green sulphur bacteria is

A. bacterioviridim

B. bacteriochlorophy11

C. chlorophyll

D. both (a) and (c)

Correct Answer :

A. bacterioviridim


Related Questions

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Sexual reproduction in E. coli is known as

A. sexduction

B. transduction

C. conjugation

D. transformation

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Food poisoning is generally caused by

A. Escherichia coli

B. Clostridium botulinum

C. Both (a) and (b)

D. None of these

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The bacteria which do not bear flagella are termed as

A. atrichous

B. lophotrichous

C. amphitrichous

D. peritrichous

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True nucleus is absent in

A. fungi

B. algae

C. lichens

D. bacteria

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Which of the following is a best source of bacteria ?

A. Water

B. Soil

C. Air

D. Human body

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An example of chemoautotrophic bacterium is

A. mitochondria

B. mesosomes

C. ribosomes

D. cell membrane

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Bacteria reproduce

A. asexually only

B. sexually only

C. mostly asexually

D. mostly sexually

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The pigment similar to chlorophyll found in green sulphur bacteria is

A. bacterioviridim

B. bacteriochlorophy11

C. chlorophyll

D. both (a) and (c)

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4

A free living bacterium capable of fixing atmospheric nitrogen is

A. Staphylococcus

B. Streptococcus

C. Azotobacter

D. None of these

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Tetanus is caused by

A. Bacillus coli

B. Streptococcus spp.

C. Pasteurella pestis

D. Clostridium tetani

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Bacteria having a tuft of flagelia at one end are called

A. monotrichous

B. peritrichous

C. amphitrichous

D. lophotrichous

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The nuclear material in a bacteria is made up of

A. DNA

B. RNA

C. Chromosome

D. None of these

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Chlorophyll 'a' occurs in

A. all plants except fungi

B. all green plants except prokaryotes

C. all green plants except bacteria

D. all green plants except cyanobacteria

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Escherichia coli is a bacterium which is a common inhabitant of

A. fertile soil

B. water

C. human intestine

D. all of these

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Bacteria are usually classified as plants because they

A. produce spores

B. have cell walls

C. cannot move

D. produce enzymes

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Which of the following bacteria can oxidise hydrogen sulphide to sulphur?

A. Rhizobium

B. Nitrosomonas

C. Beggiatoa

D. Nitrobacter

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Endospore formation takes place in which of the following bacteria ?

A. Coccus

B. Bacillus

C. Spirillum

D. Vibrio

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Root nodules are formed by the symbiotic relation between the legume and

A. algae

B. bacteria

C. bryophyta

D. fungi

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The Streptococcus lactis is responsible for

A. tanning of leather

B. flavouring of tea leaves

C. curdling of milk

D. none of these

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Putrefying bacteria act upon

A. fats

B. proteins

C. starch

D. oils

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There is no alternation of generation in �. coli due to absence of

A. nucleus

B. chromosomes

C. reduction division

D. syngamy

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The smallest bacteria are

A. vibrio

B. cocci

C. spirilla

D. bacilli

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Germ theory of disease was proposed by

A. Robert Koch

B. L. Pasteur

C. T. Boveri

D. F.Jacob

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Bacteria reproduce asexually by means of

A. fission

B. endospores

C. cyst

D. all of these

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Denitrifying bacteria convert

A. ammonia to nitrite

B. nitrite to nitrate

C. nitrate to free nitrogen

D. nitrogen to ammonia

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Bacteria was first discovered by

A. Robert Koch

B. Louis Pasteur

C. A.V. Leeuwenhoeck

D. Robert Hooke

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Which of the following statements about bacteria is not true ?

A. Some bacteria are parasitic

B. Food poisoning is caused by products of putrefying bacteria

C. Bacteria reproduce by cell division, as often as once every twenty minutes

D. Bacteria manufacture food by help of chloroplasts

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Bacteria which directly converts atmospheric nitrogen into nitrogen compounds are called

A. Nitrifying bacteria

B. Nitrogen fixing bacteria

C. Denitrifying bacteria

D. Putrefying bacteria

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Which one of the following fixes CO2 into carbohydrates ?

A. Rhizobiunt

B. Azotobacter

C. Clostridium

D. Rhodospirilium

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Of the following, which is not a bacterial action?

A. Sewage disposal

B. Nitrogen fixation

C. Emulsification of fat

D. None of these