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MEDIUM
ENGLISH
Agriculture
In natural ecosystem, decomposers include:
A
Only bacteria and fungi
Option A
B
Only microscopic animals
Option B
C
The above two types of organisms plus macroscopic animals
Option C
D
Only the above two types of organisms
Option D
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MEDIUM
ENGLISH
Agriculture
A habitat of long severe winters and growing season limited to a few months of summer constitutes:
A
Savana ecosystem
Option A
B
Taiga ecosystem
Option B
C
Tundra ecosystem
Option C
D
None of the above
Option D
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MEDIUM
ENGLISH
Agriculture
Each human couple should produce only two children which help in:
A
Checking pollution
Option A
B
Fertility of soil
Option B
C
Stabilizing the ecosystem
Option C
D
Improving food-web
Option D
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MEDIUM
ENGLISH
Agriculture
The term biosphere is used for the zone of earth where life exists:
A
On the lithosphere surface
Option A
B
In the hydrosphere
Option B
C
In the lithosphere, hydrosphere and atmosphere
Option C
D
In the lithosphere and hydrosphere
Option D
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MEDIUM
ENGLISH
Agriculture
Pond is an example of:__________?
A
Artificial ecosystem
Option A
B
Forest ecosystem
Option B
C
Natural ecosystem
Option C
D
Grassland ecosystem
Option D
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MEDIUM
ENGLISH
Agriculture
An ecosystem is: ___________?
A
A community of organisms interacting with one another
Option A
B
The abiotic component of an area
Option B
C
The part of the earth and its atmosphere where living organisms exist
Option C
D
A community of organisms together with the environment in which they live
Option D
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MEDIUM
ENGLISH
Agriculture
In an aquatic environment, microscopic animals and plants are collectively known:
A
Commensals
Option A
B
Herbivores
Option B
C
Fauna and flora
Option C
D
Planktons
Option D
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MEDIUM
ENGLISH
Agriculture
Ecosystem may be defined as:
A
Group of plants, which act as the energy suppliers
Option A
B
Group of organisms which form population
Option B
C
Functional unit for ecological studies
Option C
D
None of these
Option D
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MEDIUM
ENGLISH
Agriculture
The earth could have sustained more population if all the people would have been:
A
Pure vegetarians
Option A
B
Milk drinker and vegetarian
Option B
C
Non-vegetarians
Option C
D
Dependent upon milk, egg and vegetarian habit
Option D
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MEDIUM
ENGLISH
Agriculture
Prairies and steppes are parts of the natural regions called:
A
Temperate grasslands
Option A
B
Tropical grasslands
Option B
C
Prairie grasslands
Option C
D
Steppes grasslands
Option D
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MEDIUM
ENGLISH
Agriculture
Nepenthes is a:
A
Primary producer
Option A
B
Consumer
Option B
C
Primary producer and consumer
Option C
D
None of the above
Option D
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MEDIUM
ENGLISH
Agriculture
The pyramid that cannot be inverted in a stable ecosystem is the pyramid of:
A
Energy
Option A
B
Number
Option B
C
Biomass
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Agriculture
Which of the following habitats is most unsuitable for primary productivity:
A
Meadow
Option A
B
Forested river bank
Option B
C
Cave
Option C
D
Pond
Option D
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MEDIUM
ENGLISH
Agriculture
The minimum number of components required for an ecosystem to survive:
A
Producer and primary consumer
Option A
B
Producer and decomposer
Option B
C
Primary consumer and decomposer
Option C
D
Primary and secondary consumer
Option D
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MEDIUM
ENGLISH
Agriculture
The significance of ecosystem lies in:
A
Flow of energy
Option A
B
Cycling of matters
Option B
C
Both (a) & (b)
Option C
D
None of the above
Option D
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MEDIUM
ENGLISH
Agriculture
Carnivores are:
A
Usually primary consumers
Option A
B
Usually secondary consumers
Option B
C
Usually decomposers rather than consumers
Option C
D
Usually secondary or tertiary consumers
Option D
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MEDIUM
ENGLISH
Agriculture
The incorporation of minerals by microbes is called:
A
Mineralization
Option A
B
Humification
Option B
C
Nutrient immobilization
Option C
D
Microbe immobilization
Option D
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MEDIUM
ENGLISH
Agriculture
In a food chain, man is:
A
Producer
Option A
B
Primary consumer only
Option B
C
Primary and Secondary consumer
Option C
D
Secondary consumer only
Option D
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MEDIUM
ENGLISH
Agriculture
Biosphere refers to:
A
Plants of a particular area
Option A
B
Area occupied by living beings
Option B
C
Plants of world
Option C
D
Spherical plants
Option D
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MEDIUM
ENGLISH
Agriculture
A food chain consists of:
A
Producers and primary consumers
Option A
B
Producer, herbivores and carnivores
Option B
C
Producers, carnivores and decomposers
Option C
D
Producers, consumers and decomposers
Option D
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