The maximum amount of CO2 fixed by green plants by way of photosynthesis in a year is:
A.9 x 1013 kg
B.8 x 1012 kg
C.9 x 1011 kg
D.8 x 1010 kg
Category: Ecology and General Silviculture Mcqs
In which of the following there is no difference?
A.Primary carnivore and trophic level II
B.Secondary consumers and herbivores
C.Primary consumers and herbivores
D.Trophic level I and herbivores
In food chain initial organisms are:
A.Top consumers
B.Secondary consumers
C.Primary consumers
D.Photo synthesizers
In an ecosystem in abiotic components which of the following occurs?
A.Flow of energy
B.Cycling of material
C.Consumption of materials
D.Flow of energy and cycling of materials
Mark the incorrect statement with reference to carbon cycle:
A.Lime rocks contribute to CO2 of water
B.Atmospheric CO2 gets dissolved in water
C.CO2 is returned by combustion of fuel
D.75% of total carbon lies in geological component
Which are the biotic components of forest ecosystem?
A.Producers
B.Decomposers
C.Consumers
D.All of the above
The pyramid of number around a tree would be:
A.Straight
B.Horizontal
C.Inverted
D.Indefinite
Nektons are:
A.Organisms that swim in water
B.Floating plants
C.Suspended lower plants
D.Animals associated with plants
E.Algae
The temperate broad-leaf forest biomes are characterized by the predominance of
A.Cupressus sp.
B.Dalbergia sp.
C.Diospyros sp.
D.Quercus sp.
