A. Cycling of materials
B. Flow of energy
C. Both (a) & (b)
D. None of the above
Related Mcqs:
- The significance of ecosystem lies in:
A. Flow of energy
B. Cycling of matters
C. Both (a) & (b)
D. None of the above - In a terrestrial ecosystem such as forest maximum energy lies in which trophic level?
A. T1
B. T2
C. T3
D. T4 - 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 - In natural ecosystem, decomposers include:
A. Only bacteria and fungi
B. Only microscopic animals
C. The above two types of organisms plus macroscopic animals
D. Only the above two types of organisms - An ecosystem is: ___________?
A. A community of organisms interacting with one another
B. The abiotic component of an area
C. The part of the earth and its atmosphere where living organisms exist
D. A community of organisms together with the environment in which they live - An ecosystem is:
A. A functional unit of biotic and abiotic components which have an energy source
B. Either a part of land surface, a body of fresh water or the open oceans
C. A functional unit consisting of sunlight, air water and minerals
D. A system consisting of an energy source, producers and consumers - 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 - Biotic components of an ecosystem include:
A. Producers only
B. Consumers only
C. Producers and Consumers only
D. Producers, consumers and decomposers - The fungi in a forest ecosystem act as:
A. Macroconsumer
B. Decomposer
C. Omnivore
D. Producer
