Acid scarification is:

Related Mcqs:

1. Mechanical scarification is:

   A. The purpose of mechanical scarification is to modify hard
   B. Or impervious seed coats
   C. Both (a) & (b)
   D. None of these

2. Acid rain means:

   A. A type of pollution which washes out of the atmosphere as dilute sulphuric and nitric acids
   B. It tends to be a regional rather than a global phenomenon linked to particular industrial activities and meteorological conditions
   C. Both (a) & (b)
   D. None of these

3. Acid rain brings with it:

   A. Sulphuric acid alone
   B. Nitric acid alone
   C. Nitrous acid and sulphurous acid
   D. Sulphuric acid, sulphurous acid nitric acid and, nitrous acid

4. Acid rain is mainly caused by increased concentration (in atmosphere) of:

   A. Ozone and dust
   B. NH3 and SO3
   C. CO and SO3
   D. NO2 and SO2

5. 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%

6. Eucalypts is:

   A. Seed collection
   B. Seed storage
   C. Seed sowing
   D. Transplanting
   E. All of the above

7. Tamarix aphylla period of ripening of seed is:

   A. January – March
   B. March – April
   C. November – December
   D. December – January

8. Dalbergia sissoo period of ripening of seeds is:

   A. January – February
   B. March – April
   C. February – April
   D. None of these

9. Acacia modesta period of ripening of seed is:

   A. May – July
   B. September – November
   C. February – April
   D. November

10. The major types of thinning are:

    A. Mechanical
    B. Selection
    C. Ordinary/low
    D. Crown
    E. All of the above