Edaphic factor is due to:

Related Mcqs:

1. These are generally, but not always, developed above the birch zone and in patches, sometimes extensive, within it, probably conditioned by edaphic and biotic factors, in Kashmir, Gilgit, Chitral and Hazara. This type ascends normally to ______ or more above the sub-alpine forests and climate must be similar but more severe than in sub-alpine forests:

   A. 140 m
   B. 150 m
   C. 160 m
   D. 170 m

2. Sometimes sound and uninjured seeds may fail to germinate due to reduced activity of the seed or seed parts resulting in blockade of the growth. This may be due to:

   A. External effects of environment
   B. Internal conditions within the plant itself, i.e. Embryo dormancy or seed coat dormancy
   C. Both (a) & (b)
   D. None of these

3. The unclassified area which constituted more than ____ of the total area at the time of independence, in due course of time, has dropped to the present level due to extension in the land use:

   A. 40%
   B. 50%
   C. 60%
   D. 70%

4. The air pollution caused by phosphate fertilizer factories is due to:The air pollution caused by phosphate fertilizer factories is due to:

   A. Phosphene
   B. SiF4
   C. Dust
   D. Halogens

5. The hydrologic factor refers to:

   A. Atmosphere
   B. Water
   C. Gravitational water
   D. Snow

6. A passive factor which affects formation of soil:

   A. Nature of parent material
   B. Annual rainfall
   C. Wind velocity
   D. Mean temperature

7. Factor affecting wood measurement is / are:

   A. Saw thickness (Kerf)
   B. Thickness of timber
   C. The minimum length of sawn pieces, the more conservation and less wastage
   D. Wider the log, the lesser the wastage
   E. All of the above

8. 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

9. The physiographic factor responsible for the initiation of succession to:

   A. Erosion
   B. Fire
   C. Hail
   D. Wind

10. Habitat destruction is the indirectly acting factor while _____ hunting are the main direct human factors affecting wildlife populations:

    A. Legal
    B. Illegal
    C. Both (a) & (b)
    D. None of these