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MEDIUM
ENGLISH
Agriculture
When peacock eats snakes which eat insects thriving on green plants, peacock is:
A
A primary consumer
Option A
B
A primary decomposer
Option B
C
Final decomposer
Option C
D
The apex of the food pyramid
Option D
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MEDIUM
ENGLISH
Agriculture
The non-green plants are as important as the green plants because they:
A
Cause human disease
Option A
B
Cause diseases of other plants
Option B
C
Are useful in several industries
Option C
D
Bring about decomposition of dead animals and plant remains
Option D
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MEDIUM
ENGLISH
Agriculture
A complex of several species and communities in various stages of succession maintained under similar climatic conditions is known as:
A
Biome
Option A
B
Environmental complex
Option B
C
Biological spectrum
Option C
D
Biological clocks
Option D
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MEDIUM
ENGLISH
Agriculture
The earth’s atmosphere in which organisms live, is called:
A
Ecosystem
Option A
B
Ectosome
Option B
C
Biosphere
Option C
D
Bioeconomic
Option D
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MEDIUM
ENGLISH
Agriculture
In a fish aquarium green aquatic plants are grown primarily for:
A
Oxygen
Option A
B
Carbon dioxide
Option B
C
Fish feed
Option C
D
Decoration
Option D
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MEDIUM
ENGLISH
Agriculture
Biome’ is:
A
A community of organisms interacting with one another
Option A
B
That part of the earth and its atmosphere, which inhabits living organisms
Option B
C
The flora on land
Option C
D
The flora in an ocean
Option D
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MEDIUM
ENGLISH
Agriculture
The phytoplanktonic forms of plants are:
A
Insectivorous type
Option A
B
Heterotrophs
Option B
C
Chemotrophs
Option C
D
Autotrophs
Option D
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MEDIUM
ENGLISH
Agriculture
In a food chain, the initial organism is:
A
Herbivore
Option A
B
Photosynthesis
Option B
C
Carnivore
Option C
D
Symbiotic
Option D
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MEDIUM
ENGLISH
Agriculture
All the living organisms on the earth interacting with atmosphere constitute:
A
Biosphere
Option A
B
Community
Option B
C
Biome
Option C
D
Association
Option D
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MEDIUM
ENGLISH
Agriculture
Food chains are met with only in the:
A
Sea
Option A
B
Forests
Option B
C
Deserts
Option C
D
In all these places
Option D
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MEDIUM
ENGLISH
Agriculture
A biotic community comprises:
A
Plants only
Option A
B
Animals only
Option B
C
Plants and animals
Option C
D
Plants or animals
Option D
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MEDIUM
ENGLISH
Agriculture
The river mouth ecosystem is called:
A
Estuarine
Option A
B
Lotic
Option B
C
Lentic
Option C
D
None of these
Option D
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MEDIUM
ENGLISH
Agriculture
The trophic structure in an ecosystem is in fact:
A
Producer-consumer arrangement
Option A
B
Refers to grazing food chain only
Option B
C
Never forms a food web
Option C
D
Never photosynthesis dependent
Option D
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MEDIUM
ENGLISH
Agriculture
The amount of living matter present in a component population of a particular trophic level is called:
A
Standing crop
Option A
B
Standing quality
Option B
C
Both (a) & (b)
Option C
D
Standing state
Option D
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MEDIUM
ENGLISH
Agriculture
Every ecosystem must have a continuous external source of:
A
Energy
Option A
B
Oxygen
Option B
C
Living organism
Option C
D
Bacteria
Option D
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MEDIUM
ENGLISH
Agriculture
The source of energy in an ecosystem is:
A
sugar stored in plants
Option A
B
Light received from the sun
Option B
C
Heat liberated during fermentation
Option C
D
Heat liberated during respiration
Option D
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MEDIUM
ENGLISH
Agriculture
The pyramid of biomass is variable in some:
A
Grassland ecosystems
Option A
B
Pond ecosystems
Option B
C
Parasitic ecosystems
Option C
D
Forest ecosystems
Option D
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MEDIUM
ENGLISH
Agriculture
The ecosystem exists in a state of ‘balance’. Supposing one of the heterotrophs, says the rabbit, multiplies and increases in number suddenly then:
A
The balance will be permanently upset because the rabbits will eat the grass in the system and die of starvation
Option A
B
The ‘balance’ will be restored by an increase in the wolf population
Option B
C
Epidemics will break out in the rabbits and kill all of them
Option C
D
Rabbits will starts eating each other
Option D
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MEDIUM
ENGLISH
Agriculture
Plants constitute the:
A
Third trophic level
Option A
B
Fourth trophic level
Option B
C
First trophic level
Option C
D
Second trophic level
Option D
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MEDIUM
ENGLISH
Agriculture
A man is the part of biotic community:
A
Always
Option A
B
Only when he lives in big cities
Option B
C
Only when he lives in forest
Option C
D
Never
Option D
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