General characteristics of crown are:

Related Mcqs:

1. The desert range areas are generally ploughed with a disc, followed by a cultivator, the general characteristics of an ideal seedbed are:

   A. Very firm below seeding depth
   B. Well pulverized and mellow on top
   C. Not cloddy or puddled
   D. Free from plant competition
   E. All of the above

2. Crown includes:

   A. Palm trees
   B. Bamboo
   C. Conifers
   D. All of the above

3. Shapes of crown serve to expose the leaves to sunlight and air. The types of crowns of tree:

   A. Conical
   B. Umbrella
   C. Spherical
   D. Columnar
   E. All of the above

4. Conditions or factors which influence the crown closure is:

   A. Manner of formation of the stand
   B. Quality of soil
   C. Soil moisture
   D. All of the above

5. Degree of crown density in a forest stand is:

   A. Closed
   B. Dense
   C. Thin
   D. Open
   E. All of the above

6. The influences of crown on trees is:

   A. Quality of bole or wood
   B. Volume production per unit area
   C. Control composition of species
   D. Regulate seeds and resin production
   E. All of the above

7. 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

8. A windbreak with 50% crown density is more effective than one of either 100% or of ______ density:

   A. 15%
   B. 20%
   C. 25%
   D. 30%

9. The best windbreaks approach is 100% crown density in the low-profile shurb, rows, and _____ density in the tall rows:

   A. 50%
   B. 60%
   C. 70%
   D. 80%

10. The characteristics of the original group system was the undulating profile of the regenerated corp obtained by reason of the considerable variation in age between the groups of regeneration:

    A. Gayer’s line
    B. Group system
    C. Clear strip system
    D. None of these