Plants growing on sea shores show characters of
hydrophytes
mesophytes
xerophytes
halophytes
Correct Answer :
D. halophytes
Related Questions
The main cause of soil erosion in India is
drought
heavy rainfall
deforestation
heavy winds
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
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
Synecology is the study of
community in relation to environment
individuals
environment
water
When compared to the trophic level above, the total energy present in any given trophic level is necessarily
greater
lesser
the same
very small
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
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
Association of a sea-anemone with hermit crab living in a gastropod shell is an example of
mutualism
commensalism
symbiosis
parasitism
The transitional zone where two different types of communities meet is called the
Ecotype
Littoral
Ecotone
Both and
Which of the following atmospheric pollutants is not produced by the exhaust of motor vehicles in Delhi
Fly ash
Hydrocarbon gases
CO
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
Which of the following is normally not an important atmospheric pollutant
CO
Hydro-carbon
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
Strontium- 90 can cause
lung diseases
bone cancer
leukaemia
skin cancer
Plants growing on sea shores show characters of
hydrophytes
mesophytes
xerophytes
halophytes
Pedology is the study of
soil
rocks
animal diseases
locomotion of animals
The total interacting animals and plants in any well defined area which as field or a pond is known as
biosphere
biome
community
ecosystem
The soils transported by water are called
peat
alluvial
colluvial
none of these
A pond is
a biome
a natural ecosystem
an artificial ecosystem
a community of plants and animals
Silent valley of Kerala is preserved because
it contains timber trees
it harbours lions
it harbours elephants
it contains rare animals and plants
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
Synecology is the study of
environment
individual
specific species
plant community
The most widespread form of symbiosis in nature is
mutualism
commensalism
predatism
parasitism
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
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
The total set of feeding relationships in a biotic community is called
a food chain
trophic levels
food webs
ecosystem
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