Ultra-violet radiation from sunlight causes the reaction that produce
CO
Fluorides
Correct Answer :
C.
Related Questions
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
Desert animals are called
arboreal
cursorial
benthos
xeric
Gas liberated in Bhopal gas tragedy was
methyl isocyanide
phenyl isocyanide
ethylene
acetylene
Which of the following atmospheric pollutants is not produced by the exhaust of motor vehicles in Delhi
Fly ash
Hydrocarbon gases
CO
Ultra-violet radiation from sunlight causes the reaction that produce
CO
Fluorides
Plants growing on sea shores show characters of
hydrophytes
mesophytes
xerophytes
halophytes
All the living organisms on earth constitute
biome
biosphere
community
population
Pedology is the study of
soil
rocks
animal diseases
locomotion of animals
Smog is a combination of
air and water
water and smoke
smoke and fog
fire and water
Which one is the direct ecological factor ?
Soil structure
Wind
Temperature
Climate
Animals in cold regions have fur because
hair is a good insulating material
hairs trap air which acts as insulator
they like fur
none of these
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
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
The total interacting animals and plants in any well defined area which as field or a pond is known as
biosphere
biome
community
ecosystem
Trophic levels are formed by
plants only
animals only
organisms linked in food chains
all of these
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
Biological equilibrium is equilibrium among the
producers
producers and consumers
decomposers and producers
producers, consumers and decomposers
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
An organism which lives at the expense of another organism is called
predator
prey
host
parasite
The most widespread form of symbiosis in nature is
mutualism
commensalism
predatism
parasitism
The term "ecosystem" was first proposed by
A.G. Tansely
H.T. Odum
Karl Mobius
None of these
The main cause of soil erosion in India is
drought
heavy rainfall
deforestation
heavy winds
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
A pond is
a biome
a natural ecosystem
an artificial ecosystem
a community of plants and animals
Synecology is the study of
environment
individual
specific species
plant community
A food-chain consists of
producer only
producers and consumers
consumers only
decomposers only
The transitional zone where two different types of communities meet is called the
Ecotype
Littoral
Ecotone
Both and
An association between two or more species in which both are benefited is known as
commensalism
symbiosis
mutualism
cooperation
The total set of feeding relationships in a biotic community is called
a food chain
trophic levels
food webs
ecosystem
Animals which live at the bottom of the sea are called
leutic
benthic
pelagic
none of these