A pond is
a biome
a natural ecosystem
an artificial ecosystem
a community of plants and animals
Correct Answer :
B. a natural ecosystem
Related Questions
Trophic levels are formed by
plants only
animals only
carnivorous animals only
organisms linked in food-chains
A food-chain consists of
producer only
producers and consumers
consumers only
decomposers only
In a food-chain, the saprophytic organisms are
producers
consumers
predators
decomposers
An association between two or more species in which both are benefited is known as
commensalism
symbiosis
mutualism
cooperation
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
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
The term "ecosystem" was first proposed by
A.G. Tansely
H.T. Odum
Karl Mobius
None of these
The most polluted city in the world is
Tokyo
New York
Calcutta
Mexico
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
Which of the following is an anti-forest conservation activity ?
Economy in timbering
Clear falling of trees
Prevention of fibres
Preservation of wild animals
Plants growing on sea shores show characters of
hydrophytes
mesophytes
xerophytes
halophytes
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
Animals which live at the bottom of the sea are called
leutic
benthic
pelagic
none of these
Which of the following atmospheric pollutants is not produced by the exhaust of motor vehicles in Delhi
Fly ash
Hydrocarbon gases
CO
Pedology is the study of
soil
rocks
animal diseases
locomotion of animals
When compared to the trophic level above, the total energy present in any given trophic level is necessarily
greater
lesser
the same
very small
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
The main cause of soil erosion in India is
drought
heavy rainfall
deforestation
heavy winds
The most widespread form of symbiosis in nature is
mutualism
commensalism
predatism
parasitism
The transitional zone where two different types of communities meet is called the
Ecotype
Littoral
Ecotone
Both and
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
An organism which lives at the expense of another organism is called
predator
prey
host
parasite
Smog is a combination of
air and water
water and smoke
smoke and fog
fire and water
The total interacting animals and plants in any well defined area which as field or a pond is known as
biosphere
biome
community
ecosystem
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
Silent valley of Kerala is preserved because
it contains timber trees
it harbours lions
it harbours elephants
it contains rare animals and plants
The energy storage of consumer level is called
gross primary productivity
net primary productivity
secondary productivity
none of these
The whale is
primary producer
carnivorous secondary consumer
herbivorous
a decomposers
Ultra-violet radiation from sunlight causes the reaction that produce
CO
Fluorides
A pond is
a biome
a natural ecosystem
an artificial ecosystem
a community of plants and animals