loam soil
clay soil
sandy soil
poeaty soil
B. clay soil
a food chain
genetic drift
ecological succession trend
a phylogenetic trend
Protozoa
Oxygen produced by plants
Sunlight
Manure in the soil
Taiga ecosystem
Tundra ecosystem
Savannah ecosystem
Tropical rainforest
soil
locomotion of animals
rocks
crop diseases
Nitrosomonas
Azotobacter
Nitrobacter
Closteridium
A community of organisms interacting with one another
The abiotic component of a habitat
The part of the earth and its atmosphere which inhabits living organisms
The community of organisms together with environment in which they live
the flora on land
the flora in ocean
a community of organisms interacting with each other
that part of earth and its atmosphere which inhabits living organisms
Forest prevent soil erosion
Forests act as water sheds
Forests have lots of water plants
Forests bring rainfall, in monsoon
Typha latifolia
Cyperus rotundus
Parthenium
Eichhornia
Succulents
Heterophyllous
Herbaceous
Viviparous
purification of water
formation of soil
sterilization of soil
degradation of soil
upright
inverted
upright or inverted
none of these
soil structure
organic colloids
crystalloids
none of the above
Solar energy
Hydro-power
Natural gas
All of these
leukaemia
polio
pneumonia
haemophilia
green plants systhesize food
the green plants eat everything
they are fixed at a place
none of these
Marine
Freshwater
Grassland
Pond
Lichens
Algae
Fungus
Fems
decomposition of animals and plants by bacteria
photosynthesis by green plants
fermentation of sugars
sun-light
suspended hydrophyte
submerged hydrophyte
floating and anchored plant
a free floating hydrophyte
Sufficient food will not be available to water organisms
Sufficient oxygen will not be available to water organisms
Drinking water will not be available
B.O.D value of water will decrease
In which individuals interact with each other
In which life originated
The name of a bird
Organic compound by which life diminih
Diatoms
Lichens
Mosses
Ferns
Tropical regions
Deserts
Temperate deciduous plants
Deserts
when both organisms are benefited
when one organism is benefited without affecting the other
when one organism is affected
when both organisms are affected
loam soil
clay soil
sandy soil
poeaty soil
storage water
capillary water
field capacity
gravitational water
frequent cyclones
rainfall
frequent landslides
erosion of soil surface
the roots are starved
of the mechanical injury to roots
most of the aerial parts are eaten away
of the mechanical injury to branches
ozone
carbon monoxide and oxides of sulphur
hydrocarbons and hot air
algae spores and marsh gas