The ecological succession occurring as population 1 ? 2 ? 3 ? 4 indicates

Related Mcqs:

1. 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

2. During ecological succession from pioneers to climax community the biomass of vegetation:

   A. Increases, then decreases
   B. Remains constant
   C. Decreases continuously
   D. Increases continuously

3. The ecological succession was first studied by:

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

4. Ecological pyramids are of:

   A. Two types
   B. Three types
   C. Four types
   D. Five types

5. Tip of ecological pyramid is occupied by:

   A. Herbivores
   B. Carnivores
   C. Producers
   D. Decomposers

6. Ecological pyramids were discovered by:

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

7. 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

8. 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

9. 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

10. 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