Multiple Choice QuestionsWhich important green-house gas, other than carbon dioxide, is being produced from the agricultural fields?
Arsine
Sulphur dioxide
Ammonia
Nitrous oxide
Ten percent law of energy transfer in a food chain is given by
Schimper
Elton
Haeckel
Lindemann
Benthic organisms are found in
surface of marine water
middle of water in sea
bottom of sea
on ground
Small fish get stuck near the bottom of a shark and derives its nutrition from it. This kind of association is called as
antibiosis
commensalism
predation
parasitism
B.
commensalism
In commensalism, association between members of different species is made in the way that one is benefitted and other neither is benefitted nor harmed.
Antibiosis is the complete or partial inhibition of one organism by another through the production of some substance as a result of metabolic pathways.
In parasitism the parasite organisms derives food and sometimes shelter also, from the host without killing it.
In predation, predatory organisms are free living which catch and kill another species for food.
the group of Anamniota includes
reptiles and birds
birds and mammals
fishes an amphibians
reptiles and mammals
The presence of diversity at the junction of territories of two different habitats is known as
bottleneck effect
edge effect
junction effect
Pasteur effect
Gases found in primitive atmosphere are
CH4, NH3, H2, H2O (vapour form)
CH4, NH3, CO2, H2O
CH4, H2O, CO2
CH4, O2, CO2
Nitrifying bacteria are able to
convert atmospheric nitrogen into soluble forms
convert ammonia to nitrate
ammonia to nitrogen
nitrate to nitrogen
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