The ecological equilibrium in mined areas can be achieved by:

Related Mcqs:

1. Different ecological areas have different techniques for afforestation. These techniques are:

   A. Afforestation of dry tracts with irrigation
   B. Afforestation of canal banks
   C. Reclamation of dry sites without irrigation
   D. Reclamation of denuded hill slopes
   E. All of the above

2. Migration flows: Some projects are undertaken to stop the movement of people from nural areas to urban areas / and:

   A. Rural industry projects
   B. Electrification of rural areas
   C. Both (a) & (b)
   D. None of these

3. In order to maintain proper ecological balance:

   A. The existing forests should be cleared and new ones should be planted
   B. Some quick growing anuals should be planted if a tree must be cut for other uses
   C. Tree must be cut whenever necessary because the underground part performs the useful purpose
   D. A tree should be planted in place of one to be cut

4. The ecological pyramids were first designed by:

   A. Clements
   B. Kormondy
   C. Warming
   D. Elton

5. Ecological pyramids were discovered by:

   A. Elton
   B. Odum
   C. Reiter
   D. None of these

6. Ecological aspects is / are:

   A. Forests generally have a beneficent effect on the soil
   B. The roots of the forest trees take up nutrients from the soil, convert
   C. And utilize them for the production of plant material
   D. All of the above

7. Various ecological constraints are:

   A. Competition for water and nutrients and for solar energy
   B. Future agroforestry systems will have to overcome physiological (canopy structure) biological (pests and disease), ecological (Sustainability and environment protection) constraints besides being economically sound
   C. Both (a) & (b)
   D. None of these

8. Among the plants listed, point out one that does not fit into ecological group represented by the other plants:

   A. Acacia
   B. Aloe
   C. Euphorbia
   D. Rhizophora

9. Mark the correct sequence of events occurring during ecological succession:

   A. Nudation – ecesis – aggregation – migration
   B. Migartion – ecesis – aggregation – nudation
   C. Nudation – migration – ecesis – aggregation
   D. Nudation – ecesis – migration – aggregation

10. The ecological succession was first studied by:

    A. Clements
    B. Hult
    C. Odum
    D. King