The level beyond which no major increase is possible represents:

Related Mcqs:

1. Dry temperate forests are distribute throughout the inner mountain ranges beyond the effective reach of the south-west monsoon, notably in the upper reaches of the Indus and its tributaries including the whole of:

   A. Gilgit and parts of Chitral
   B. Nilam and Khaghan valleys
   C. Both (a) & (b)
   D. None of these

2. The flora and fauna in lakes and ponds represents:

   A. Lentic biota
   B. Latic biota
   C. Abiotic
   D. None of these

3. It has been possible to raise the yield of resin from chir pine from the existing 1.5 kg per tree to 3.5 kg on the average per tree by using the American Bark Hack method in conjunction with ______ sulfuric acid:

   A. 30%
   B. 40%
   C. 50%
   D. 60%

4. The possible beneficial effect of the grazing animals is:

   A. Addition of their excreta to the soil
   B. Eradication of weeds
   C. Removal of wild plants
   D. Removal of wild animals

5. In Pakistan about ________ area is arid or semi arid and agriculture is not possible without irrigation:

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

6. The populations increase in their number due to:

   A. Mortality
   B. Natality
   C. Dispersal
   D. Emigration

7. Immense increase in the number of organisms of a species is checked by:

   A. Environmental resistance
   B. Biotic potential
   C. Imigration
   D. All of these

8. Which major aerosol pollutant is present in jet aircraft emission?

   A. SO2
   B. Fluoro-carbons
   C. CCI4
   D. CO

9. The major factors that make today’s ‘land-use crisis’ a global issue of greatest concern is:

   A. The magnitude of the problem on terms of people and areas affected, which is unprecedented in history
   B. The accelerating nature of the processes involved and the increasing irreversibility of their results
   C. The lack of success (for socio-economic, cultural or ecological reasons) of most agriculture technologies from temperate regions to solve land-productivity problems over large areas of the topics
   D. All of the above

10. Major types of Alpine vegetation is classified into the:

    A. Alpine scrub type consisting of moist deciduous Apline scrub, dry sone alpine scrub, moist Alpine pasture, dry Alpine plateau pastures, dwarf juniper scrub, and dwarf Rhododendron scrub forest
    B. Most Alpine scrub comprises dry alpine scrub and moist alpine scrub
    C. Alpine forests contain Alpine fir birch forest, Rhododendron forest and high level bluepine forests
    D. All of the above