Trophic levels are formed by
plants only
animals only
carnivorous animals only
organisms linked in food-chains
Correct Answer :
D. organisms linked in food-chains
Related Questions
Which one is the direct ecological factor ?
Soil structure
Wind
Temperature
Climate
Plants growing on sea shores show characters of
hydrophytes
mesophytes
xerophytes
halophytes
Bio tic factors are
chemical factors of soil which affect life
physical factors of soil which affect life
all living organisms which influence other organisms
factors of atmosphere which affect life
All the living organisms on earth constitute
biome
biosphere
community
population
The main cause of soil erosion in India is
drought
heavy rainfall
deforestation
heavy winds
Acid rain is
limited to industrial areas
presence of large quantity of SO^2 in the atmosphere
a natural phenomenon
presence of CO^2 in the atmosphere
Some animals have a constant high body temperature. This is because
they like this temperature
they can work fast in the temperature
they prefer to live in cold region
they are active animals
The first fish that eats upon the planktonic form is
carnivore
primary consumer
secondary consumer
decomposers
The soils transported by water are called
peat
alluvial
colluvial
none of these
An association between two or more species in which both are benefited is known as
commensalism
symbiosis
mutualism
cooperation
The transitional zone where two different types of communities meet is called the
Ecotype
Littoral
Ecotone
Both and
Pedology is the study of
soil
rocks
animal diseases
locomotion of animals
Which of the following atmospheric pollutants is not produced by the exhaust of motor vehicles in Delhi
Fly ash
Hydrocarbon gases
CO
The whale is
primary producer
carnivorous secondary consumer
herbivorous
a decomposers
Ultra-violet radiation from sunlight causes the reaction that produce
CO
Fluorides
The total set of feeding relationships in a biotic community is called
a food chain
trophic levels
food webs
ecosystem
Biome is
a part of the earth and its atmosphere which inhabits livings organisms
a community of organisms interacting with each other
the fauna and flora on land
the fauna and flora on ocean
Trophic levels are formed by
plants only
animals only
carnivorous animals only
organisms linked in food-chains
Synecology is the study of
environment
individual
specific species
plant community
Silent valley of Kerala is preserved because
it contains timber trees
it harbours lions
it harbours elephants
it contains rare animals and plants
One always finds many more of the prey species than of the predator. This is called a
food web
pyramid of numbers
pyramid of succession
none of these
Synecology is the study of
community in relation to environment
individuals
environment
water
When compared to the trophic level above, the total energy present in any given trophic level is necessarily
greater
lesser
the same
very small
Birth rate under ideal conditions is known as
mortality
natality
both and
none of these
Strontium- 90 can cause
lung diseases
bone cancer
leukaemia
skin cancer
Which of the following is normally not an important atmospheric pollutant
CO
Hydro-carbon
Association of a sea-anemone with hermit crab living in a gastropod shell is an example of
mutualism
commensalism
symbiosis
parasitism
The most polluted city in the world is
Tokyo
New York
Calcutta
Mexico
Gas liberated in Bhopal gas tragedy was
methyl isocyanide
phenyl isocyanide
ethylene
acetylene
Animals which live at the bottom of the sea are called
leutic
benthic
pelagic
none of these