An ecosystem may be defined as:

Related Mcqs:

1. 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

2. Ecosystem may be defined as:

   A. Group of plants, which act as the energy suppliers
   B. Group of organisms which form population
   C. Functional unit for ecological studies
   D. None of these

3. 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

4. The concepts of population dynamics and carrying capacity lead to management of wildlife which may be defined as:

   A. Art
   B. Science of manipulating the centrum of wild animal populations to meet specific objectives
   C. Both (a) & (b)
   D. None of these

5. The driving force of the ecosystem is:

   A. Carbohydrates in plants
   B. Biomass
   C. Solar energy
   D. Producers

6. 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

7. The biotic and abiotic components of the ecosystem are connected through:

   A. Standing quality
   B. Climatic regime
   C. Transducers
   D. Humification and mineralization

8. The cybernetics of an ecosystem refers to:

   A. Harvest index
   B. A feedback mechanism
   C. Regulation of equilibrium
   D. Reverse energy flow

9. Ecosystem receives nitrogen from outside through:

   A. Biological nitrogen fixation
   B. Electrification of nitrogen
   C. Industries
   D. All the above

10. Which ecosystem has the highest primary productivity?

    A. Pond ecosystem
    B. Lake ecosystem
    C. Grassland ecosystem
    D. Forest ecosystem