Multiple Choice QuestionsAcid rain is due to increase in atmospheric concentration of :
Ozone
CO2 and CO
SO3 and CO
SO2 and nitrogen oxide
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
A.
always upright
In a forest ecosystem, the producers are large size trees which make the base of Pyramid. The herbivores such as fruit eating birds, deer, elephants etc. make the primary consumers and are less than primary producers. After that, the number goes down at each successive level.
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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