Cold and hot stratification is:

Related Mcqs:

1. Stratification occurs in:

   A. Desert
   B. Tropical forest
   C. Deciduous forest
   D. Tundra

2. Stratification is most complex in:

   A. Tropical forest
   B. Deciduous forests
   C. Savannah
   D. Both (a) and (b)

3. When a plant of hot climate is transferred to colder regions, it gets an injury called:

   A. Chilling
   B. Thermal death
   C. Desiccation
   D. Freezing

4. Winds – Hot and desiccating winds blow from _____ at the rate of 80-96 km per hour and decrease the efficiency of the already meager rainfall in the plains areas:

   A. April to September
   B. June to October
   C. July to November
   D. None of these

5. Temperature – with June the hottest month, summer (May to August) in plains is very hot and daily maximum temperature normally exceed 40

   A. Upper Punjab
   B. Upper Sind
   C. Upper KPK
   D. None of these

6. In cold storage the best temperature of storing seed of most species lies between ______.

   A. 3
   B. 2
   C. 4
   D. None of these

7. Plants growing on externally cold soil are called:

   A. Halophyte
   B. Oxylophyte
   C. Psychrophyte
   D. Psammophyte

8. Plants growing in extreme cold soil are:

   A. Oxylophytes
   B. Halophytes
   C. Psychrophytes
   D. Psammophytes

9. 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

10. The high cold Gobi Desert in _______.

    A. China and Magnolia
    B. China and Pakistan
    C. China and India
    D. None of these