621.
The three major living components of an ecosystem are
A
Heterotrophs, Consumers and Reducers
B
Detritivores, Consumers and Phototrophs
C
Producers, consumers and Decomposers
D
Producers, Autotrophs and Decomposers
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The three major living components of an ecosystem are
Heterotrophs, Consumers and Reducers
Detritivores, Consumers and Phototrophs
Producers, consumers and Decomposers
Producers, Autotrophs and Decomposers
The term Environment is derived from an old French word enviro means
Inside
Biotic community
Outside
Surroundings
The TAJ MAHAL at AGRA may be damaged by
hydrogen
oxygen
sulphur dioxide
chlorine
The sudden increase in the population of the species is
over population
all above
population growth
population explosion
The subsurface sources of water is
Stream
Ocean
River
Dug well
The most important organisms of an ecosystem are
Carnivores
Protozon
Herbivores
Producers
The main components of photochemical smog is
oxides of nitrogen
all of the above
water vapour
sulphur dioxide
The loss of water from plants and tree leaves is called
Evaporation
Transpiration
Precipitation
Respiration
The layers of atmosphere consists of
Lithosphere and Hydrosphere
Biosphere and Hydrosphere
Troposphere, Stratosphere, Mesosphere and Temperature
Hydrosphere and biosphere
The layer which provides ideal site for flying of jet planes is
Mesosphere
Troposphere
Thermosphere
Stratosphere
The green plants are also called
Producers
Consumers
Reducers
Detritivores
The flow of energy is
Oneway
Cyclic
Linear and oneway
None of these
The Ecological pyramid that is always upright
Pyramid of energy
Pyramid of biomass
Pyramid of number
None of these
The ecological pyramid always starts with the following at the base
Decomposer
Producer
Consumer
None of these
The drop in air temperature at a rate of 6.50 C per 1000 m increase in altitude of troposphere is known as
Environmental lapse rate
Environmental degradation
Green house effect
Global warming
The concentration of which gas is highest in our environment?
Oxygen
Hydrogen
Nitrogen
Carbon dioxide
Study of trends in human population growth and prediction of future growth is called
Demography
Biography
paleography
psychology
Sequence of eating and being eaten in a ecosystem is called
Food web
Natural cycle
Ecological Pyramid
Food chain
Region where fresh water meets salt water is called
Sea
Lake
River
Estuarine
Nutrients are recycled in ecosystem by
Biogeochemical cycle
Energy flow
Producers
Consumers