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MEDIUM
ENGLISH
Agriculture
Which of the following terms is not a synonym literally for ecosystem?
A
Ectosome
Option A
B
Ecosphere
Option B
C
Microcosm
Option C
D
Holocene
Option D
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MEDIUM
ENGLISH
Agriculture
The term reducer is applied to:
A
Decomposers
Option A
B
Detritivores
Option B
C
Both (a) & (b)
Option C
D
Heterotrophs
Option D
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MEDIUM
ENGLISH
Agriculture
The percentage of light energy utilized for photosynthesis by higher plants is:
A
100
Option A
B
50
Option B
C
10
Option C
D
1
Option D
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MEDIUM
ENGLISH
Agriculture
The primary consumers are described as:
A
Herbivores
Option A
B
Converters
Option B
C
Transducers
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Agriculture
The ecosystem lying in the alpine zone between taiga and polar ice is called:
A
Savana
Option A
B
Autotrophic
Option B
C
Heterotrophic
Option C
D
Tundra
Option D
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MEDIUM
ENGLISH
Agriculture
The ration of food energy assimilated to the food energy ingested is called:
A
Trophic level efficiency
Option A
B
Photosynthetic efficiency
Option B
C
Net production efficiency
Option C
D
Assimilation efficiency
Option D
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MEDIUM
ENGLISH
Agriculture
According to Odum, the percentage of net primary production of total light intake is:
A
10%
Option A
B
0.15%
Option B
C
1%
Option C
D
1.50%
Option D
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MEDIUM
ENGLISH
Agriculture
In a stabilized ecosystem the P/R ratio is:
A
One
Option A
B
Less than one
Option B
C
More than one
Option C
D
Any of these
Option D
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MEDIUM
ENGLISH
Agriculture
Which of the following is the smallest unit?
A
Biosphere
Option A
B
Ecosphere
Option B
C
Ecosystem
Option C
D
Biome
Option D
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MEDIUM
ENGLISH
Agriculture
In a parasitic food chain which trophic level is represented by bugs and lices?
A
T4
Option A
B
T3
Option B
C
T2
Option C
D
T1
Option D
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MEDIUM
ENGLISH
Agriculture
The pyramid of number in a forest ecosystem is:
A
Rhombiodal
Option A
B
Upright
Option B
C
Inverted
Option C
D
Linear
Option D
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MEDIUM
ENGLISH
Agriculture
The taiga ecosystems lie in the:
A
Alpine zone
Option A
B
Sub-alpine zone
Option B
C
Temperate zone
Option C
D
Sub-tropical zone
Option D
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MEDIUM
ENGLISH
Agriculture
The pyramid of biomass in a shallow pond ecosystem is:
A
Inverted
Option A
B
Upright
Option B
C
Rhomboidal
Option C
D
Liver
Option D
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MEDIUM
ENGLISH
Agriculture
The biotic and abiotic components of the ecosystem are connected through:
A
Standing quality
Option A
B
Climatic regime
Option B
C
Transducers
Option C
D
Humification and mineralization
Option D
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MEDIUM
ENGLISH
Agriculture
The flow of materials and energy in an ecosystem is respectively:
A
Cyclic only
Option A
B
Cyclic and linear
Option B
C
Linear and cyclic
Option C
D
Linear only
Option D
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MEDIUM
ENGLISH
Agriculture
The cybernetics of an ecosystem refers to:
A
Harvest index
Option A
B
A feedback mechanism
Option B
C
Regulation of equilibrium
Option C
D
Reverse energy flow
Option D
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MEDIUM
ENGLISH
Agriculture
The pyramid of biomass in a forest ecosystem is:
A
Upright
Option A
B
Inverted
Option B
C
Rhomboidal
Option C
D
Linear
Option D
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MEDIUM
ENGLISH
Agriculture
From gross production of autotrophs, according to Lindemann, how much energy in gcal/cm2/year is used in respiration and decomposition respectively:
A
78.2, 29.3
Option A
B
78.2, 3.5
Option B
C
29.3, 3.5
Option C
D
23.9, 5.3
Option D
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MEDIUM
ENGLISH
Agriculture
The efficiency of primary production in an ocean is:
A
5%
Option A
B
3.50%
Option B
C
1%
Option C
D
0.20%
Option D
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MEDIUM
ENGLISH
Agriculture
According to Lindemann, the total solar input in terms of gcal/cm2/year is:
A
112,887
Option A
B
118,872
Option B
C
181,872
Option C
D
112,788
Option D
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