Multiple Choice QuestionsAcid rain is due to increase in atmospheric concentration of :
Ozone
CO2 and CO
SO3 and CO
SO2 and nitrogen oxide
D.
SO2 and nitrogen oxide
Acid rain is any form of precipitation with acidic components, such as sulfuric acid or nitric acid that fall to the ground from the atmosphere in wet or dry forms. Both sulphur dioxide (SO2) and nitrogen oxide (NO2) are converted to acids when they combine with water vapour in the atmosphere. These acids return into earth as either wet deposition (acid rain or snow) or dry deposition (sulphate and nitrate salts).
Which of the following factor is biotic
Photoperiod
CO2 content to the soil
Texture and porosity of soil
Rainfall
The pyramid of energy-in a forest ecosystem is
always upright
always inverted
both (a) and (b)
none of the above
Identify which one of the following is an example, of incomplete ecosystem?
Grassland
Cave
River
Wetland
Which of the following is an example of man-made ecosystem
Herbarium
Aquarium
Tissue culture
Forest
Identify the correct type of food chain
Dead animal > Blow fly maggots > Common frog > Snake
Grazing food chain
Detrital food chain
Decomposer food chain
Predator food chain
Pyramid of energy in ecosystems is
always upright
always inverted
mostly upright
mostly inverted
Trophic levels in ecosystem is formed by
only bacteria
only plants
only herbivores
organisms linked in food chain
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