An organism which lives at the expense of another organism is called
predator
prey
host
parasite
Correct Answer :
D. parasite
Related Questions
A pond is
a biome
a natural ecosystem
an artificial ecosystem
a community of plants and animals
The soils transported by water are called
peat
alluvial
colluvial
none of these
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producers
producers and consumers
decomposers and producers
producers, consumers and decomposers
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it harbours lions
it harbours elephants
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phenyl isocyanide
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acetylene
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secondary consumers is the largest because they are most powerful
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primary consumers outnumber primary producers
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individual
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silt, sand and clay
clay, sand and silt
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presence of large quantity of SO^2 in the atmosphere
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trophic levels
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carnivorous secondary consumer
herbivorous
a decomposers
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Fly ash
Hydrocarbon gases
CO
Trophic levels are formed by
plants only
animals only
organisms linked in food chains
all of these
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biome
biosphere
community
population
Ultra-violet radiation from sunlight causes the reaction that produce
CO
Fluorides
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
An organism which lives at the expense of another organism is called
predator
prey
host
parasite
A food-chain consists of
producer only
producers and consumers
consumers only
decomposers only
Association of a sea-anemone with hermit crab living in a gastropod shell is an example of
mutualism
commensalism
symbiosis
parasitism
Animals in cold regions have fur because
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hairs trap air which acts as insulator
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lesser
the same
very small
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net primary productivity
secondary productivity
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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