@⇒ Short cut notes / rapid fire notes / best theory of Microbiology of soils ⇒ Microbiology ⇒ Medical Science Engineering Multiple Choice Questions / Objective type questions, MCQ's, with question and answers, download free PDF

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Home⇒ Medical Science⇒ Microbiology⇒ Microbiology of soils

1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. .

2-Wrong options are also given but dont concentrate there, Right answer is in bold format.

Q1 ⇒ Nitrogen fixation by the microorganisms can be detected by adopting the approach of
all of the above
[other wrong options] [Discuss in forum] 2 -4

Q2 ⇒ The transformation of nitrates to gaseous nitrogen is accomplished by microorganisms in a series of biochemical reactions. The process is known as
denitrification
[other wrong options] [Discuss in forum] 2 -2

Q3 ⇒ Which of the following statement is not true about composition of biogas?
It also contains with traces of O₂ and Cl₂
[other wrong options] [Discuss in forum] 1 -1

Q4 ⇒ Which of the following species of different genera of bacteria are not capable of transforming nitrate to nitrogen?
None of these
[other wrong options] [Discuss in forum] 1 -1

Q5 ⇒ The microbial ecosystem of soil includes
biotic and abiotic components of soil
[other wrong options] [Discuss in forum] 2 -2

Q6 ⇒ Which of the following microorganism use H₂S as the electron donor to reduce carbon dioxide?
Both (a) and (b)
[other wrong options] [Discuss in forum] 1 -1

Q7 ⇒ The groups of symbiotic bacteria, which have the ability to fix nitrogen
all of the above
[other wrong options] [Discuss in forum] 1 -1

Q8 ⇒ The nitrogenase consists of
both (a) and (b)
[other wrong options] [Discuss in forum] 1 -1

Q9 ⇒ Which are the main source of biofertilisers?
Cyanobacteria
[other wrong options] [Discuss in forum] 1 -1

Q10 ⇒ Which of the following fungi on infecting crop roots can improve their uptake of phosphorus and other nutrients?
VA Mycorrhiza
[other wrong options] [Discuss in forum] 1 -1

Q11 ⇒ Which of the following is capable of oxidizing sulfur to sulfates?
Thiobacillus thiooxidans
[other wrong options] [Discuss in forum] 2 -2

Q12 ⇒ The diagnostic enzyme for denitrification is
nitrate reductase
[other wrong options] [Discuss in forum] 2 -1

Q13 ⇒ __________ play a key role in the transformation of rock to soil.
Cyanobacteia
[other wrong options] [Discuss in forum] 3 -4

Q14 ⇒ Nitrogen fixation
both (a) and (b)
[other wrong options] [Discuss in forum] 2 -1

Q15 ⇒ Which of the following soil microorganism is involved in the reduction of sulfates to H₂S?
Desulfotomaculum
[other wrong options] [Discuss in forum] 1 -2

Q16 ⇒ The nonsymbiotic bacteria which fix nitrogen live in the soil independently are
all of the above
[other wrong options] [Discuss in forum] 3 -2

Q17 ⇒ The population of algae in soil is __________ that of either bacteria or fungi.
generally smaller than
[other wrong options] [Discuss in forum] 5 -7

Q18 ⇒ In the process of nitrogen fixation, which of the following microorganism is involved?
Non symbiotic and symbiotic microorganisms only
[other wrong options] [Discuss in forum] 1 -1

Q19 ⇒ The breakdown of cattle manure in biogas is accomplished by which of the following type of bacteria?
All of these
[other wrong options] [Discuss in forum] 1 -2

Q20 ⇒ The energy value of biogas is typically
400-700 BTU/ft³
[other wrong options] [Discuss in forum] 1 -1

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