A. Producers
B. Consumers
C. Decomposers
D. All of the above
Related Mcqs:
- In a comparative study of grassland ecosystem and pond ecosystem it may be observed that:
A. Primary and secondary consumers are similar
B. Both biotic and abiotic components are different
C. The biotic components are almost similar
D. The abiotic components are almost similar - Exotic species, which brought for plantation from some other country to our country or even from one ecosystem to other ecosystem are called, as exotic species like:
A. Pinus nigra – Japan
B. Euralyptus – Australia
C. Polunia – China
D. All of the above - Ecosystem has two components:
A. Plants and animals
B. Weeds and trees
C. Biotic and abiotic
D. Frogs and men - Ecosystem is: ____________?
A. Both open and closed unit depending upon the biomass present
B. Closed unit
C. Open unit
D. Both open and closed unit depending upon community type - The minimum number of components required for an ecosystem to survive:
A. Producer and primary consumer
B. Producer and decomposer
C. Primary consumer and decomposer
D. Primary and secondary consumer
E. Producer and secondary consumer - The gross primary production is maximum in the following ecosystem:
A. Open sea
B. Grasslands and pastures
C. Coniferous forests
D. Tropical and sub-tropical forest - The decomposers in an ecosystem constitute the following trophic level:
A. T1
B. T3
C. T5
D. T4 - In a forest ecosystem, green plants are:
A. The primary producers
B. Primary producers only sometimes
C. The decomposers
D. The consumers - If we completely remove the decomposers from an ecosystem, its functioning will be adversely affected because:
A. Herbivores will not receive solar energy
B. Rate of decomposition of other component will be very high
C. Mineral movement will be blocked
D. Energy flow will be blocked - Energy enters into the ecosystem through:
A. Herbivores
B. Carnivores
C. Producers
D. Decomposers
The correct answer to the question: "Ecosystem contains:" is "All of the above".
