a food chain
genetic drift
ecological succession trend
a phylogenetic trend
C. ecological succession trend
sand-silt and clay
silt-sand and clay
clay-sand and silt
clay-silt and sand
Typha latifolia
Cyperus rotundus
Parthenium
Eichhornia
Nitrogen
Carbon
Phospnorus
Oxygen
grass � wolf > deer > buffalo
bacteria � grass � rabbit > wolf
grass � insect � bird � snake
grass > snake �insect � deer
Nitrosomonas
Azotobacter
Nitrobacter
Closteridium
decomposition of animals and plants by bacteria
photosynthesis by green plants
fermentation of sugars
sun-light
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
soil structure
organic colloids
crystalloids
none of the above
Botanical Survey of India - Calcutta
St. Xavier's Herbarium - Mumbai
Central National Herbarium - Calcutta
IARI - New Delhi
a well developed root system
a well developed vascular system
a well developed stomatal system
a reduced vascular system
halophytic
mesophytic
xerophytic
hydrophytic
soil
locomotion of animals
rocks
crop diseases
Bharatpur
Kaziranga
Silent Valley
Gir
Darwin's birthday
World hygiene day
World environment day
World population day
Diatoms
Lichens
Mosses
Ferns
Marine
Freshwater
Grassland
Pond
frequent cyclones
rainfall
frequent landslides
erosion of soil surface
Forest prevent soil erosion
Forests act as water sheds
Forests have lots of water plants
Forests bring rainfall, in monsoon
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
the roots are starved
of the mechanical injury to roots
most of the aerial parts are eaten away
of the mechanical injury to branches
producer - consumer - decomposer
decomposer - consumer - producer
producer - decomposer - consumer
consumer - producer - decomposer
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
when both organisms are benefited
when one organism is benefited without affecting the other
when one organism is affected
when both organisms are affected
biotic potential
biotic component
biological value
biological amplification
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
Succulents
Heterophyllous
Herbaceous
Viviparous
parasitic food chain
consumer food chain
detritus food chain
predator food chain
Adaptation
Acclimatisation
Colonisation
All the above
Protozoa
Oxygen produced by plants
Sunlight
Manure in the soil
Himachal Pradesh
Haryana
Tamil Nadu
Assam