The importance of ecosystem lies in:
A.Cycling of materials
B.Flow of energy
C.Both (a) & (b)
D.None of the above
Category: Agriculture Ecology and General Silviculture Mcqs
A food chain starts with:
A.Nitrogen fixing organisms
B.Photosynthesizing organisms
C.Respiration
D.Decomposers
The earth could have sustained more population if all the people would have been:
A.Pure vegetarians
B.Milk drinker and vegetarian
C.Non-vegetarians
D.Dependent upon milk, egg and vegetarian habit
Which of the following is logical sequence of carbon cycle:
A.Photosynthesis-consumer-decomposer
B.Decomposer-consumer-photosynthesis
C.Photosynthesis-decomposer-consumer
D.Consumer-photosynthesis-decomposer
The first link in any food chain is a green plant because:
A.They are widely distributed
B.They are firmly fixed to soil
C.They alone have the capacity to fix the atmospheric CO2 in the presence of sunlight
D.There are more herbivorous animals than the carnivorous
A food chain consists of:
A.Producers and primary consumers
B.Producer, herbivores and carnivores
C.Produers, carnivores and decomposers
D.Producers, consumers and decomposers
The number of kinds of food chains:
A.One
B.Two
C.Three
D.Four
The amount of living matter present in a component population of a particular trophic level is called:
A.Standing crop
B.Standing quality
C.Both (a) & (b)
D.Standing state
The earth’s atmosphere in which organisms live, is called:
A.Ecosystem
B.Ecosom
C.Biosphere
D.Biocoenosis
What is contributed from the outer space in an ecosystem?
A.All the atmospheric gases
B.Only carbon, hydrogen and oxygen
C.Energy only
D.All the above components
