In a biotic community, primary consumers are:
A.Herbivores
B.Detrivores
C.Carnivores
D.Omnivores
Category: Ecology and General Silviculture Mcqs
In food chain, herbivores are:
A.Producer
B.Primary consumer
C.Secondary consumers
D.Decomposers
The rate at which light energy is converted into chemical energy of organic molecules is the ecosystem’s:
A.Net primary productivity
B.Gross secondary productivity
C.Net secondary productivity
D.Gross primary productivity
Which part of the pond ecosystem does not affect by the temperature:
A.Epilimnion
B.Metalimnion
C.Hypolimnion
D.All of the above
Which of the following is an artificial ecosystem?
A.Rice-field
B.Forest
C.Grassland
D.Lake
The flow of materials and energy in an ecosystem is respectively:
A.Cyclic only
B.Cyclic and linear
C.Linear and cyclic
D.Linear only
From gross production of autotrophs, according to Lindemann, how much energy in gcal/cm2/year is used in respiration and decomposition respectively:
A.78.2, 29.3
B.78.2, 3.5
C.29.3, 3.5
D.23.9, 5.3
Which one of the following pairs is a sedimentary type of biogeochemical cycle?
A.Oxygen and nitrogen
B.Phosphorus and sulphur
C.Phosphorus and CO2
D.Phosphours and nitrogen
Which of the following terms is not a synonym literally for ecosystem?
A.Ecosom
B.Ecosphere
C.Microcosm
D.Holocoene
The living organisms of all ecosystems collectively constitute:
A.Producers
B.Decomposers
C.Consumers and decomposers
D.Biosphere
