In western Himalayas, the Betula trees usually occur in:

Related Mcqs:

1. The cold season, lasting from ______ , enjoys its major share from western disturbances which are also the source of snowfall in the Himalayas, Hindu Kush and Karakoram:

   A. December to February
   B. January to March
   C. March to May
   D. None of these

2. Common combinations of the agroforestry system in Pakistan are: Trees species: Agricultural crops grown with trees:

   A. Poplars: wheat / maize / turmeric / sugarcane / vegetables / fodder
   B. Eucalypts: wheat/sunflower/tomatoes/potatoes/chilies
   C. Simal: maize/sunflower/vegetables/fodder
   D. Shisham: turmeric/wheat/maize/vegetables
   E. All of the above

3. This is the topmost tree formation in the Himalayas developed between about ______ on northerly aspects and perhaps 150 m. Higher on warmer slopes:

   A. 3,350 m to 3,800 m
   B. 4,450 m to 4,800 m
   C. 5,550 m to 5,800 m
   D. None of these

4. About _______ people in this country living from Himalayas to the coast of Arabian sea depend on livestock for their bread and butter and are engaged in its herding and rearing:

   A. 1.5 million
   B. 2 million
   C. 2.5 million
   D. 3 million

5. A minima rotation worth the name is specified which corresponds to the age at which the trees reach the exploitable size which is usually 120 years, but is 150 years for the deodar, fir and kail in the moist zone of Kaghan 200 years for the ry zone of ______

   A. Swat
   B. Naran
   C. Kaghan
   D. None of these

6. 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

7. Flag trees’ are formed due to:

   A. Lodging
   B. Erosion and deperition
   C. Unidirectional wind
   D. Salt spray

8. Chir forests are near the western limit of their range in Pakistan and they extend eastwards upto _________

   A. Bhutan
   B. Sri Lanka
   C. Nepal
   D. Afghanistan

9. Whole of the country, outside the main Himalayan Range, receives a low variable rainfall from 50 mm in western parts of Boluchistan highlands to about 1500 mm in the _____

   A. Himalayan region
   B. Hindu Kush region
   C. Karakoram region
   D. None of these

10. Pakistan being located on the confluence of the western end of the Indian subcontinent and the Iranian plateau supports a varied and interesting mix of flora and fauna belonging to the:

    A. Indo-Malayan
    B. Palaearctic regions
    C. Some forms originating from the Ethiopian region
    D. All of the above