ozone
carbon monoxide and oxides of sulphur
hydrocarbons and hot air
algae spores and marsh gas
B. carbon monoxide and oxides of sulphur
a food chain
genetic drift
ecological succession trend
a phylogenetic trend
upright
inverted
upright or inverted
none of these
green plants systhesize food
the green plants eat everything
they are fixed at a place
none of these
A food chain is a chain of food consumers
A food chain is chain of food producers
A food chain is a series of organisms through which food energy flows in an ecosystem
None of the above
grass � wolf > deer > buffalo
bacteria � grass � rabbit > wolf
grass � insect � bird � snake
grass > snake �insect � deer
Nitrosomonas
Azotobacter
Nitrobacter
Closteridium
leukaemia
polio
pneumonia
haemophilia
the roots are starved
of the mechanical injury to roots
most of the aerial parts are eaten away
of the mechanical injury to branches
Bharatpur
Kaziranga
Silent Valley
Gir
a well developed root system
a well developed vascular system
a well developed stomatal system
a reduced vascular system
when both organisms are benefited
when one organism is benefited without affecting the other
when one organism is affected
when both organisms are affected
Botanical Survey of India - Calcutta
St. Xavier's Herbarium - Mumbai
Central National Herbarium - Calcutta
IARI - New Delhi
Kashmir
Kerala
Africa
America
encouragement of growth of microbes to decompose sewage
disinfection of sewage
removal of heavy grit from sewage in the settling chambers
pumping of sewage into aeration tanks for increased microbial activity
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
Lichens
Algae
Fungus
Fems
soil
locomotion of animals
rocks
crop diseases
Solar energy
Hydro-power
Natural gas
All of these
In which individuals interact with each other
In which life originated
The name of a bird
Organic compound by which life diminih
Forest prevent soil erosion
Forests act as water sheds
Forests have lots of water plants
Forests bring rainfall, in monsoon
Himachal Pradesh
Haryana
Tamil Nadu
Assam
purification of water
formation of soil
sterilization of soil
degradation of soil
producer - consumer - decomposer
decomposer - consumer - producer
producer - decomposer - consumer
consumer - producer - decomposer
loam soil
clay soil
sandy soil
poeaty soil
Marine
Freshwater
Grassland
Pond
Typha latifolia
Cyperus rotundus
Parthenium
Eichhornia
Protozoa
Oxygen produced by plants
Sunlight
Manure in the soil
Tropical regions
Deserts
Temperate deciduous plants
Deserts
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
natural geochemical cycles
the natural flora of a place
the natural wild life of a region
the natural balance of our environment