Static Quiz 22 February 2023
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Static Quiz 22 February 2023 for UPSC Prelims
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- Question 1 of 5
1. Question
Which of following statement is true about the Ecotone?
CorrectAns: a) It is meeting place of two different eco systems
Explanation:
An ecotone is a transition area between two biological communities, where two communities meet and integrate. It may be narrow or wide, and it may be local (the zone between a field and forest) or regional (the transition between forest and grassland ecosystems).
It may be narrow (between grassland and forest) or wide (between forest and desert). It has conditions intermediate to the adjacent ecosystems. Hence it is a zone of tension
A well-developed ecotone contains some organisms which are entirely different from that of the adjoining communities
Ecotone is a place where two different eco systems meet each other. Mangrove and terrestrial eco system is an example of Ecotone. This area is very rich is in species.
IncorrectAns: a) It is meeting place of two different eco systems
Explanation:
An ecotone is a transition area between two biological communities, where two communities meet and integrate. It may be narrow or wide, and it may be local (the zone between a field and forest) or regional (the transition between forest and grassland ecosystems).
It may be narrow (between grassland and forest) or wide (between forest and desert). It has conditions intermediate to the adjacent ecosystems. Hence it is a zone of tension
A well-developed ecotone contains some organisms which are entirely different from that of the adjoining communities
Ecotone is a place where two different eco systems meet each other. Mangrove and terrestrial eco system is an example of Ecotone. This area is very rich is in species.
- Question 2 of 5
2. Question
Which of following statement is incorrect about the Biosphere?
CorrectAns: c) Organisms are uniformly present in Biosphere
Explanation:-
Biosphere is combination of lithosphere, hydrosphere and Atmosphere. Biosphere is not found everywhere some areas do not support the conditions required for Biosphere. Hence Organisms are not uniformly distributed throughout the world.
IncorrectAns: c) Organisms are uniformly present in Biosphere
Explanation:-
Biosphere is combination of lithosphere, hydrosphere and Atmosphere. Biosphere is not found everywhere some areas do not support the conditions required for Biosphere. Hence Organisms are not uniformly distributed throughout the world.
- Question 3 of 5
3. Question
Which of following can be used for controlling Gaseous Pollutant?
CorrectAns:- c) Absorption
Explanation:-
Absorption technique is used for controlling Gaseous pollutant. These pollutants are brought into contact with liquid such as water. It may either become solvent or capture it through the chemical reaction.IncorrectAns:- c) Absorption
Explanation:-
Absorption technique is used for controlling Gaseous pollutant. These pollutants are brought into contact with liquid such as water. It may either become solvent or capture it through the chemical reaction. - Question 4 of 5
4. Question
What does the high Biological Oxygen Demand (BOD) indicates?
CorrectAns:- a) High level of Microbial Pollution
Explanation:-
Oxygen is demanded for decomposition related activities under the water. Increase in waste and pollution enhances the decomposition activities and thereby reduces the availability of oxygen for other organic activities under the water body.
Chemical Oxygen Demand is the total measurement of all chemicals (organics & in-organics) in the water / waste water;
BOD is a measure of, the amount of oxygen that require for the bacteria to degrade the organic components present in water / waste water
IncorrectAns:- a) High level of Microbial Pollution
Explanation:-
Oxygen is demanded for decomposition related activities under the water. Increase in waste and pollution enhances the decomposition activities and thereby reduces the availability of oxygen for other organic activities under the water body.
Chemical Oxygen Demand is the total measurement of all chemicals (organics & in-organics) in the water / waste water;
BOD is a measure of, the amount of oxygen that require for the bacteria to degrade the organic components present in water / waste water
- Question 5 of 5
5. Question
Among these which is not an abiotic component of an ecosystem?
CorrectAns;- d) Microorganisms
Explanation;-
An ecosystem is a bunch of organisms and the environment in which they live. Biotic factors are living parts (the organisms) of that ecosystem, and abiotic factors are nonliving parts (often, the habitat).
IncorrectAns;- d) Microorganisms
Explanation;-
An ecosystem is a bunch of organisms and the environment in which they live. Biotic factors are living parts (the organisms) of that ecosystem, and abiotic factors are nonliving parts (often, the habitat).
