Factor affection thinning is/are:

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. Thinning methods are:

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

4. 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

5. The major types of thinning are:

   A. Mechanical
   B. Selection
   C. Ordinary/low
   D. Crown
   E. All of the above

6. Thinning classification is / are:

   A. Dominant trees (D)
   B. Dominated (d)
   C. Suppressed (s)
   D. Deed, Moribund (m) and include bent ever and badly leaning trees
   E. All of the above

7. Thinning in mixed plantations are:

   A. It is hardly impossible that mixed plant have same height
   B. Ordinary thinning is not applied as it deprives of slow growing spp.
   C. Both (a) & (b)
   D. None of these

8. Species & site quality affect interval of thinning in way:

   A. Species
   B. Site quality (S.Q)
   C. Both (a) & (b)
   D. None of these

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

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

10. The supersonic jets cause pollution by thinning of:

    A. O3 layer
    B. SO2 layer
    C. O2 Layer
    D. CO2 layer