The effects of mulches, irrespective their composition, are attributed to:

Related Mcqs:

1. The major effects of mulches, irrespective of their composition, are attributed to:

   A. Suppression of weeds, by restricting the amount of light on the ground surface and thus hindering their germination and growth
   B. Conservation of soil, by preventing erosion
   C. Maintenance or improvement of soil structure, by eliminating or mitigating the severity of rain and wind action
   D. All of the above

2. The major types of Mulches is / are:

   A. Artificial mulches: Paper and plastic mulches
   B. Natural mulches
   C. Inorganic; soil mulch and stone mulch
   D. Organic; branches, twigs and leaves, leaf litter, grass weed
   E. All of the above

3. Thermal insulation, leading to greater deposition of dew. In addition organic mulches also contribute to:

   A. Enhanced humification and microbial activity leading to higher nutrient availability
   B. Improvement of soil structure, by incorporation of plant residues and by encouraging soil fauna.
   C. Mulching is of profound importance in dry regions
   D. Even in more humid climates it may have very beneficial effects with certain species, e.g., the poplar
   E. All of the above

4. The rate of replacement of species composition with the change in the environment constitutes:

   A. Gamma diversity
   B. Beta diversity
   C. Community diversity
   D. Ecosystem diversity

5. Division of forest into stands on the basis of composition is / are:

   A. Pure stand
   B. Mixed stand
   C. Both (a) & (b)
   D. None of these

6. The control of growing stock, its structure and composition are:

   A. Site adaptation
   B. Choice of species and provenance
   C. Regeneration age and timing of the cut are important consideration
   D. Harvesting the produce
   E. All of the above

7. The composition of soil air is affected by:

   A. Pore size
   B. Soil organisms
   C. Type of roots
   D. All of these

8. By chemical composition the humus has maximum percentage of:

   A. Nitrogen
   B. Oxygen
   C. Carbon
   D. Hydrogen

9. Effecting/effects of thinning are:

   A. Average tree size in the remaining crop increases with increasing weight of thinning
   B. Delay in thinning is not compensated for in terms of girth increment by removing larger volume, unless this volume represents a greater proportion of the growing stock than did the earlier thinning
   C. Both (a) & (b)
   D. None of these

10. Air pollution effects are usually found on:

    A. Leaves
    B. Flowers
    C. Stems
    D. Roots