Carbon cycle includes
producer - consumer - decomposer
decomposer - consumer - producer
producer - decomposer - consumer
consumer - producer - decomposer
Correct Answer :
A. producer - consumer - decomposer
Related Questions
The nitrifying bacteria which oxidise nitrite to nitrates include
Nitrosomonas
Azotobacter
Nitrobacter
Closteridium
The best indicator of SO^2 pollution is
Lichens
Algae
Fungus
Fems
Hie earliest settlers on barren lands are generally
Diatoms
Lichens
Mosses
Ferns
. Biome is
the flora on land
the flora in ocean
a community of organisms interacting with each other
that part of earth and its atmosphere which inhabits living organisms
In grassland ecosystem the pyramid of energy is
upright
inverted
upright or inverted
none of these
Smog is a common pollutant in places having
excessive so2 in their air
excessive ammonia in the air
low temperature
high temperature
Vegetation in Delhi is predominantly
halophytic
mesophytic
xerophytic
hydrophytic
The first stage of plant succession on earth is called
Adaptation
Acclimatisation
Colonisation
All the above
Hie sequence blue green algae > crustose lichens � foliose lichens > mosses � shrubs � dicotyledonous tree represents
a food chain
genetic drift
ecological succession trend
a phylogenetic trend
Hydrilla is a
suspended hydrophyte
submerged hydrophyte
floating and anchored plant
a free floating hydrophyte
First link in any food chain is green plant because
green plants systhesize food
the green plants eat everything
they are fixed at a place
none of these
Which of the following functions performed by forests help most in controlling drought
Forest prevent soil erosion
Forests act as water sheds
Forests have lots of water plants
Forests bring rainfall, in monsoon
Biosphere is:
In which individuals interact with each other
In which life originated
The name of a bird
Organic compound by which life diminih
Which one of the following is associated with the conservation of forest ?
Bharatpur
Kaziranga
Silent Valley
Gir
Plankton, Nekton and Itenthon are not the components of one of the following ecosystems:
Marine
Freshwater
Grassland
Pond
When young plants are grazed too heavily they get killed because
the roots are starved
of the mechanical injury to roots
most of the aerial parts are eaten away
of the mechanical injury to branches
The food chain in which microorganisms break down the energy-rich compounds synthesized by producers is
parasitic food chain
consumer food chain
detritus food chain
predator food chain
What is the major constituent of biomass of an organism
Nitrogen
Carbon
Phospnorus
Oxygen
Mark which is true
A food chain is a chain of food consumers
A food chain is chain of food producers
A food chain is a series of organisms through which food energy flows in an ecosystem
None of the above
Which is the correct food chain
grass � wolf > deer > buffalo
bacteria � grass � rabbit > wolf
grass � insect � bird � snake
grass > snake �insect � deer
Commensalism is
when both organisms are benefited
when one organism is benefited without affecting the other
when one organism is affected
when both organisms are affected
The source of energy in the ecosystem is:
decomposition of animals and plants by bacteria
photosynthesis by green plants
fermentation of sugars
sun-light
One of these is a renewable source of energy:
Solar energy
Hydro-power
Natural gas
All of these
Humus is an example of
soil structure
organic colloids
crystalloids
none of the above
Laterization is a process which results in the
purification of water
formation of soil
sterilization of soil
degradation of soil
Radiation is a health hazard as it causes
leukaemia
polio
pneumonia
haemophilia
An American plant which had become a troublesome weed in India is
Typha latifolia
Cyperus rotundus
Parthenium
Eichhornia
A habitat of long severe winters and growing season limited to a few months of summer constitutes
Taiga ecosystem
Tundra ecosystem
Savannah ecosystem
Tropical rainforest
The least porous soil among the following is
loam soil
clay soil
sandy soil
poeaty soil
Water plants usually have
a well developed root system
a well developed vascular system
a well developed stomatal system
a reduced vascular system