Species & site quality affect interval of thinning in way:

Related Mcqs:

1. Crown thinning or high thinning is:

   A. Trees are removed from the upper crown classes in order to open up the canopy
   B. It favour the development of the most promising trees of the same classes
   C. Both (a) & (b)
   D. None of these

2. Low thinning or ordinary thinning is:

   A. Trees are removed from the lower crown classes
   B. In the highest grade of low thinnings only the suppressed trees would be removed
   C. Both (a) & (b)
   D. None of these

3. A yield table for any species gives the following information on per acre basis for different site qualities and at various ages of crops:

   A. Age (5, 10, 15, 20 or 25 years)
   B. Main crop
   C. Thinning
   D. Final yield
   E. All of the above

4. Indentification of site quality: It is necessary in preparation of a plan of management are major approaches in this regard:

   A. Volume per acre at rotation age
   B. Physiology and soil
   C. Ground vegetation
   D. Height of dominant and co-dominant trees
   E. All of the above

5. 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

6. The species characteristics are an expression of the genetic make up of an animal species influencing the extend and nature of ______.

   A. Home range, breeding season
   B. Longevity, territory and the niche
   C. Both (a) & (b)
   D. None of these

7. Thinning methods are:

   A. Mechanical
   B. Selective
   C. Schedule/statistical
   D. All of the above

8. Thinning problems are:

   A. Good and bad trees mix that their spacing in uneven, so either good trees or trees at equal spacing are maintained
   B. To search out negative characteristic tree (negative approach)
   C. Both (a) & (b)
   D. None of these

9. Factor affection thinning is/are:

   A. Site quality (S.Q): For good SQ thinning will be heavy but for poor S.Q. It will be of lighter intensity
   B. For hot, dry, weedy site, southern aspect thinning will be of lighter intensity.
   C. Objective: For getting timber, heavily thinning carried out and for getting fuel wood, no need or light, thinning is done
   D. All of the above

10. The major types of thinning in mixed plantation are:

    A. Selection
    B. Trees to be felled
    C. Improvement felling
    D. All of the above