Many forested regions of today were once barren rock areas. Mot likely this change involved the following sequence of stages:

Related Mcqs:

1. A place was rocky and barren but now there is a green forest; the sequence of origin is:

   A. Lichen, mos, herbs, shrubs
   B. Moss, lichen, herbs, shrubs
   C. Lichen, moss, shrubs, herbs
   D. Shrubs, herbs, moss, lichen

2. Several kinds of minor forest produce are available from the forested areas; these include _________

   A. Flosses, medicinal plants
   B. Gums, essential oils rosin and turpentine tannins
   C. Silk and lack production
   D. All of the above

3. The earliest settlers on barren lands generally are:

   A. Diatoms
   B. Ferns
   C. Mosses
   D. Lichens

4. If a piece of land which had a plant community becomes barren due to some external thrust, the succession taking place here is called:

   A. Induced
   B. Deflated
   C. Secondary
   D. Retrogessive

5. 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

6. Reseeding is not likely to be successful on areas receiving less than ______

   A. 300 mm
   B. 400 mm
   C. 500 mm
   D. 600 mm

7. When a plant of hot climate is transferred to colder regions, it gets an injury called:

   A. Chilling
   B. Thermal death
   C. Desiccation
   D. Freezing

8. Plants grow sparsely in arid regions of the world:

   A. Only because of high temperature
   B. Because no seeds fall near the soil
   C. Because of several environmental factors combining together
   D. Because the soil is sandy

9. Main watershed regions and their problems are:

   A. The northern mountain region
   B. The uplands of northern Punjab
   C. The western mountain region
   D. The southwest Boluchistan plateau
   E. All of the above

10. Watershed regions of Pakistan is/are:

    A. Which are sufficiently homogeneous in themselves
    B. But distinct from each other in two major characteristics i.e., land form and climate, the factors which mainly determine the framework for watershed management
    C. Both (a) & (b)
    D. None of these