The cybernetics of an ecosystem refers to:

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. 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

3. The term homeostasis in an ecosystem refers to:

   A. A feedback mechanism
   B. A self-regulatory mechanism
   C. State of equilibrium
   D. Influence of production

4. Niche of a species in an ecosystem refers to its:

   A. Place of occurrence
   B. Competitive ability
   C. Centre of origin
   D. Function at its place of occurrence

5. The pyramid that cannot be inverted in a stable ecosystem is the pyramid of:

   A. Energy
   B. Number
   C. Biomass
   D. All of these

6. The trophic level of lion is a forest ecosystem is:

   A. T3
   B. T4
   C. T2
   D. T1

7. In an ecosystem, the population of:

   A. Primary producers is larger than that of primary consumers
   B. Secondary consumers is the largest because they are the most powerful
   C. Primary consumers outnumber primary producers
   D. Primary consumers is the least dependent upon primary producers

8. The pyramid of numbers in a grassland ecosystem will be:

   A. Linear
   B. Upright
   C. Irregular
   D. Inverted

9. The pyramid of biomass in a shallow pond ecosystem is:

   A. Inverted
   B. Upright
   C. Rhomboidal
   D. Liver

10. Which is the most stable ecosystem?

    A. Desert
    B. Ocean
    C. Mountain
    D. Forest