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MEDIUM
ENGLISH
Agriculture
Which of the following belong to the same trophic level?
A
Yeast and Monotropa
Option A
B
Rhizopus and Riccia
Option B
C
Ulothrix and Yeast
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Agriculture
An ecosystem is a structure that is:
A
Always temporary
Option A
B
Always permanent
Option B
C
Either of these
Option C
D
Rarely permanent
Option D
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MEDIUM
ENGLISH
Agriculture
The ecological pyramids were first designed by:
A
Clements
Option A
B
Kormondy
Option B
C
Warming
Option C
D
Elton
Option D
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MEDIUM
ENGLISH
Agriculture
The pyramid of biomass in a parasitic ecosystem is:
A
Upright
Option A
B
Inverted
Option B
C
Linear
Option C
D
Rhomboidal
Option D
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MEDIUM
ENGLISH
Agriculture
The solar radiations are the sole source of:
A
Energy
Option A
B
Materials
Option B
C
Both (a) & (b)
Option C
D
Standing state
Option D
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MEDIUM
ENGLISH
Agriculture
The term omnivore is applied to:
A
Herbivore and carnivore
Option A
B
Carnivore and detrivore
Option B
C
Herbivore and detrivore
Option C
D
All of these
Option D
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MEDIUM
ENGLISH
Agriculture
The term homeostasis in an ecosystem refers to:
A
A feedback mechanism
Option A
B
A self-regulatory mechanism
Option B
C
State of equilibrium
Option C
D
Influence of production
Option D
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MEDIUM
ENGLISH
Agriculture
The first link in any food chain is a green plant because:
A
They are widely distributed
Option A
B
They are firmly fixed to soil
Option B
C
They alone have the capacity to fix the atmospheric CO2 in the presence of sunlight
Option C
D
There are more herbivorous animals than the carnivorous
Option D
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MEDIUM
ENGLISH
Agriculture
Green plants constitute:
A
The first trophic level
Option A
B
The second trophic level
Option B
C
The third trophic level
Option C
D
The fourth trophic level
Option D
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MEDIUM
ENGLISH
Agriculture
The number of primary producers within a specified area world be maximum in:
A
Pond ecosystem
Option A
B
Grassland ecosystem
Option B
C
Desert ecosystem
Option C
D
Forest ecosystem
Option D
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MEDIUM
ENGLISH
Agriculture
Which of the following world is related to Homo sapiens?
A
Herbivore
Option A
B
Carnivore
Option B
C
Autotroph
Option C
D
Omnivore
Option D
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MEDIUM
ENGLISH
Agriculture
A food chain starts with:
A
Nitrogen fixing organisms
Option A
B
Photosynthesizing organisms
Option B
C
Respiration
Option C
D
Decomposers
Option D
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MEDIUM
ENGLISH
Agriculture
Which of the following characterizes the biomass in an ecosystem?
A
The biomass of producers is less than the combined biomass of consumers and decomposers
Option A
B
No general statement can be made about relative biomass of different ecological groups
Option B
C
The biomass of secondary consumers is usually greater than the biomass of primary consumers
Option C
D
The biomass of producers is generally greater than the biomass of primary consumers
Option D
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MEDIUM
ENGLISH
Agriculture
Mark the correct statement:
A
Phototrophs are transducers
Option A
B
Some herbivores are converters
Option B
C
Microconsumers are saprotrophs
Option C
D
All are correct
Option D
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MEDIUM
ENGLISH
Agriculture
The following belong to the same trophic level:
A
Tiger and wild beer
Option A
B
Snake and earthworm
Option B
C
Deer and honey bee
Option C
D
Crow and cow
Option D
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MEDIUM
ENGLISH
Agriculture
The importance of ecosystem lies in:
A
Cycling of materials
Option A
B
Flow of energy
Option B
C
Both (a) & (b)
Option C
D
None of the above
Option D
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MEDIUM
ENGLISH
Agriculture
In lake ecosystem, the pyramid of biomass is:
A
Upright
Option A
B
Inverted
Option B
C
Anything possible
Option C
D
None is correct
Option D
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MEDIUM
ENGLISH
Agriculture
The gross primary production is maximum in the following ecosystem:
A
Open sea
Option A
B
Grasslands and pastures
Option B
C
Coniferous forests
Option C
D
Tropical and sub-tropical forest
Option D
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MEDIUM
ENGLISH
Agriculture
If carbon dioxide is withdrawn from the biosphere, which organism would first experience negative effect?
A
Primary consumers
Option A
B
Producers
Option B
C
Secondary consumers
Option C
D
Tertiary consumers
Option D
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MEDIUM
ENGLISH
Agriculture
Man is a:
A
Producer
Option A
B
Consumer
Option B
C
Herbivore
Option C
D
None of these
Option D
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