The energy storage of consumer level is called
gross primary productivity
net primary productivity
secondary productivity
none of these
Correct Answer :
C. secondary productivity
Related Questions
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
The total set of feeding relationships in a biotic community is called
a food chain
trophic levels
food webs
ecosystem
Silent valley of Kerala is preserved because
it contains timber trees
it harbours lions
it harbours elephants
it contains rare animals and plants
Association of a sea-anemone with hermit crab living in a gastropod shell is an example of
mutualism
commensalism
symbiosis
parasitism
Synecology is the study of
environment
individual
specific species
plant community
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
Trophic levels are formed by
plants only
animals only
organisms linked in food chains
all of these
The soils transported by water are called
peat
alluvial
colluvial
none of these
The source of energy in an ecosystem is
light received from sun
heat liberated during respiration
heat liberated during fermentation
none of these
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
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
The main cause of soil erosion in India is
drought
heavy rainfall
deforestation
heavy winds
The whale is
primary producer
carnivorous secondary consumer
herbivorous
a decomposers
Animals which live at the bottom of the sea are called
leutic
benthic
pelagic
none of these
Species that occur in different geographical regions separated by special barriers are
Allopatric
Autogenic
Sympatric
Allogenic
Gas liberated in Bhopal gas tragedy was
methyl isocyanide
phenyl isocyanide
ethylene
acetylene
The most polluted city in the world is
Tokyo
New York
Calcutta
Mexico
The total interacting animals and plants in any well defined area which as field or a pond is known as
biosphere
biome
community
ecosystem
Ultra-violet radiation from sunlight causes the reaction that produce
CO
Fluorides
The term "ecosystem" was first proposed by
A.G. Tansely
H.T. Odum
Karl Mobius
None of these
Plants growing on sea shores show characters of
hydrophytes
mesophytes
xerophytes
halophytes
The most widespread form of symbiosis in nature is
mutualism
commensalism
predatism
parasitism
Which of the following atmospheric pollutants is not produced by the exhaust of motor vehicles in Delhi
Fly ash
Hydrocarbon gases
CO
Smog is a combination of
air and water
water and smoke
smoke and fog
fire and water
A food-chain consists of
producer only
producers and consumers
consumers only
decomposers only
Which of the following is normally not an important atmospheric pollutant
CO
Hydro-carbon
When compared to the trophic level above, the total energy present in any given trophic level is necessarily
greater
lesser
the same
very small
An organism which lives at the expense of another organism is called
predator
prey
host
parasite
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
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