Crown includes:

Related Mcqs:

1. General characteristics of crown are:

   A. In young age crowns are usually conical in shape but as the time passes the crown shape becomes rounded
   B. Drooping forms also occur in many species e.g. Polyalthia longifolia
   C. Both (a) & (b)
   D. None of these

2. 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

3. 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

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

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

5. 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

6. 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

7. 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%

8. 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%

9. The major soil texture includes:

   A. Course textured soil (more sand particles)
   B. Medium textured soil (qual proportion of very fine sand, silt and clay)
   C. Fine textured soil (silt and clay)
   D. All of the above

10. Tending of forest crops includes:

    A. Cultural operation are the operations undertaken for the completion
    B. Or assistance of regeneration/afforestation
    C. Both (a) & (b)
    D. None of these