Which of the following is normally not an important atmospheric pollutant
CO
Hydro-carbon
Correct Answer :
B.
Related Questions
The main cause of soil erosion in India is
drought
heavy rainfall
deforestation
heavy winds
An organism which lives at the expense of another organism is called
predator
prey
host
parasite
In an ecosystem the population of
primary producers is larger than that of primary consumers
secondary consumers is the largest because they are most powerful
primary consumers is the least dependent upon primary producers.
primary consumers outnumber primary producers
Which is the correct sequence in a food-chain
Grass > Wolf �Deer -^Buffalo
Grass � Snake �Insect �Deer
Grass -�Insect >Birds >Snake
Bacteria ->Grass ~>Rabbit -�Wolf
The first fish that eats upon the planktonic form is
carnivore
primary consumer
secondary consumer
decomposers
Trophic levels are formed by
plants only
animals only
organisms linked in food chains
all of these
Species that occur in different geographical regions separated by special barriers are
Allopatric
Autogenic
Sympatric
Allogenic
Strontium- 90 can cause
lung diseases
bone cancer
leukaemia
skin cancer
Silent valley of Kerala is preserved because
it contains timber trees
it harbours lions
it harbours elephants
it contains rare animals and plants
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
Desert animals are called
arboreal
cursorial
benthos
xeric
Gas liberated in Bhopal gas tragedy was
methyl isocyanide
phenyl isocyanide
ethylene
acetylene
The most widespread form of symbiosis in nature is
mutualism
commensalism
predatism
parasitism
Birth rate under ideal conditions is known as
mortality
natality
both and
none of these
Synecology is the study of
community in relation to environment
individuals
environment
water
Synecology is the study of
environment
individual
specific species
plant community
Which of the following atmospheric pollutants is not produced by the exhaust of motor vehicles in Delhi
Fly ash
Hydrocarbon gases
CO
When a big fish eats a small fish, which eats water fleas supported by phyto-plankton, the water-fleas are
producers
primary consumers
secondary consumers
top consumers in the food-chain
In a food-chain, the saprophytic organisms are
producers
consumers
predators
decomposers
Which one is the direct ecological factor ?
Soil structure
Wind
Temperature
Climate
All the living organisms on earth constitute
biome
biosphere
community
population
The soils transported by water are called
peat
alluvial
colluvial
none of these
The transitional zone where two different types of communities meet is called the
Ecotype
Littoral
Ecotone
Both and
Plants growing on sea shores show characters of
hydrophytes
mesophytes
xerophytes
halophytes
The total interacting animals and plants in any well defined area which as field or a pond is known as
biosphere
biome
community
ecosystem
Soil particles are arranged in order of increasing size are
sand, silt and clay
silt, sand and clay
clay, sand and silt
clay, silt and sand
Trophic levels are formed by
plants only
animals only
carnivorous animals only
organisms linked in food-chains
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
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
The whale is
primary producer
carnivorous secondary consumer
herbivorous
a decomposers