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

Related Mcqs:

1. 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

2. 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

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

   A. Suppression of weeds, by restricting the amount of light on the ground surface and the hindering their germination and growth
   B. Conservation of soil, by preventing erosion
   C. Thermal insulation, leading to greater deposition of dew
   D. All of the above

4. Which of the following is likely to have the highest level of DDT deposition in its body?

   A. Eel
   B. Crab
   C. Sea gull
   D. Phytoplanktons

5. Dominant tree: Including all trees which form the upper most leaf canopy and have their leading shoots free. These are usually sub-divided into:

   A. Predominant trees comprising all the largest trees which determine the general top level of the canopy
   B. Codominant trees which fall short of this, averaging about 5/6th of the height of predominant
   C. Trees with forked leader and similar defects
   D. All of the above

6. The depleted soils can be enriched by the addition of:

   A. More soil
   B. Drugs
   C. Chemical fertilizers
   D. Cattle dung

7. Pakistan Journal of Forestry published quarterly is the major organ for dissemination of research results in addition to that _____ are regularly brought out for the benefit of the field foresters and researchers:

   A. Technical notes
   B. Bulletins
   C. Research reports
   D. Brochures
   E. All of the above

8. In addition to their role in the ecosystem, the value of wildlife is also found in their _______.

   A. educational
   B. Scientific
   C. Aesthetic
   D. Recreational significance
   E. All of the above

9. The Organic contents of soil are:

   A. Humus
   B. Mull
   C. Peat and Much
   D. All of the above

10. Sources of organic matter are:

    A. Primary
    B. Secondary
    C. Both (a) & (b)
    D. None of these