The term homeostasis in 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 cybernetics of an ecosystem refers to:

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

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 term ‘ecard’ refers to:

   A. Available water
   B. Unavailable water
   C. Run off water
   D. Total atmospheric precipitation

6. The term ‘holard’ refers to:

   A. Gravitational water
   B. Capillary water
   C. Water holding capacity
   D. Field capacity

7. The term sub-soil generally refers to:

   A. Horizon-C
   B. Horizon-A
   C. Horizon-R
   D. Horizon-B

8. The term ‘chesard’ refers to:

   A. Gravitational water
   B. Capillary water
   C. Run off water
   D. Water vapour

9. The term ‘Bio-magnification’ refers to the:

   A. Growth of organism due to food consumption
   B. Increase in population size
   C. Blowing up of environmental issues by man
   D. Increase in the concentration of non-degradable pollutants as they pass through food chain
   E. Decrease in population size

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

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