Pedology is the study of
soil
locomotion of animals
rocks
crop diseases
Correct Answer :
A. soil
Related Questions
Deforestation may reduce the chances of
frequent cyclones
rainfall
frequent landslides
erosion of soil surface
Vegetation in Delhi is predominantly
halophytic
mesophytic
xerophytic
hydrophytic
Correct definition of ecosystem is :
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
Plankton, Nekton and Itenthon are not the components of one of the following ecosystems:
Marine
Freshwater
Grassland
Pond
Increasing accumulation of DDT in organisms of a food chain in higher trophic levels is known as
biotic potential
biotic component
biological value
biological amplification
Biosphere is:
In which individuals interact with each other
In which life originated
The name of a bird
Organic compound by which life diminih
A pollutant is any substance, chemical or other factor that changes
natural geochemical cycles
the natural flora of a place
the natural wild life of a region
the natural balance of our environment
Autumn colouration of leaves appears only in
Tropical regions
Deserts
Temperate deciduous plants
Deserts
Hydrilla is a
suspended hydrophyte
submerged hydrophyte
floating and anchored plant
a free floating hydrophyte
Which is the correct food chain
grass � wolf > deer > buffalo
bacteria � grass � rabbit > wolf
grass � insect � bird � snake
grass > snake �insect � deer
Carbon cycle includes
producer - consumer - decomposer
decomposer - consumer - producer
producer - decomposer - consumer
consumer - producer - decomposer
In cities like Mumbai and Delhi, the major air pollutants are
ozone
carbon monoxide and oxides of sulphur
hydrocarbons and hot air
algae spores and marsh gas
Commensalism is
when both organisms are benefited
when one organism is benefited without affecting the other
when one organism is affected
when both organisms are affected
Competition for food, light and space is most severe in
closely related species growing in the same niche
closely related species growing in different habitats
distantly related species growing in same habitat
distantly related species growing in different habitats
Primary treatment of sewage means
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
Hie sequence blue green algae > crustose lichens � foliose lichens > mosses � shrubs � dicotyledonous tree represents
a food chain
genetic drift
ecological succession trend
a phylogenetic trend
Which of the following functions performed by forests help most in controlling drought
Forest prevent soil erosion
Forests act as water sheds
Forests have lots of water plants
Forests bring rainfall, in monsoon
The least porous soil among the following is
loam soil
clay soil
sandy soil
poeaty soil
When young plants are grazed too heavily they get killed because
the roots are starved
of the mechanical injury to roots
most of the aerial parts are eaten away
of the mechanical injury to branches
Silent valley is situated in
Kashmir
Kerala
Africa
America
The biggest herbarium of India is
Botanical Survey of India - Calcutta
St. Xavier's Herbarium - Mumbai
Central National Herbarium - Calcutta
IARI - New Delhi
Laterization is a process which results in the
purification of water
formation of soil
sterilization of soil
degradation of soil
Which one of the following is associated with the conservation of forest ?
Bharatpur
Kaziranga
Silent Valley
Gir
Humus is an example of
soil structure
organic colloids
crystalloids
none of the above
What is the major constituent of biomass of an organism
Nitrogen
Carbon
Phospnorus
Oxygen
Pedology is the study of
soil
locomotion of animals
rocks
crop diseases
Tropical evergreen forests are seen in
Himachal Pradesh
Haryana
Tamil Nadu
Assam
Desert plants are generally
Succulents
Heterophyllous
Herbaceous
Viviparous
Biologists celebrate 5th June as
Darwin's birthday
World hygiene day
World environment day
World population day
First link in any food chain is green plant because
green plants systhesize food
the green plants eat everything
they are fixed at a place
none of these