Effecting/effects of thinning 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 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

4. The major types of thinning are:

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

5. 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

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

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

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

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

8. The supersonic jets cause pollution by thinning of:

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

9. Free thinning is:

   A. The attention is concentrated still further on the selection of the stems evenly spaced over the ground
   B. Which are to be retained to maturity or till the last thinning or two
   C. Both (a) & (b)
   D. None of these

10. The standard grades of ordinary thinning is:

    A. Light Thinning (A-Grade)
    B. Moderate Thinning (B-Grade)
    C. Heavy Thinning (C-Grade)
    D. Very Heavy Thinning (D-Grade)
    E. All of the above