Desert can be converted into green land by:

Related Mcqs:

1. The biggest desert belt running from the Atlantic to _______ , including Sahara and some other samaller deserts such s the Arabian Desert (Arrub-al-Khali):

   A. China
   B. India
   C. Australia
   D. Iran

2. It is estimated that ______ square km land has been converted to unproductive deserts in the last 50 years:

   A. 3.7 million
   B. 3.8 million
   C. 3.9 million
   D. 4 million

3. The non-green plants are as important as the green plants because they:

   A. Cause human disease
   B. Cause diseases of other plants
   C. Are useful in several industries
   D. Bring about decomposition of dead animals and plant remains

4. Major land forms Cholistan Desert ranges is / are :

   A. Subrecent river plain
   B. The first sandy terrace above the Hakra River (late pleistocene)
   C. The second sandy terrace above the Kakra River plain (late pleistocene)
   D. The third sandy terrace above the Hakra River plain (middle pleistocene)
   E. All of the above

5. The rate at which light energy is converted into chemical energy of organic molecules is the ecosystem’s:

   A. Net primary productivity
   B. Gross secondary productivity
   C. Net secondary productivity
   D. Gross primary productivity

6. With the construction of Thal irrigation canal, about _____ sand dunes have been converted into highly productive cultivated areas:

   A. 1 m ha
   B. 2 m ha
   C. 3 m ha
   D. 4 m ha

7. Plants growing on desert and steppe are called:

   A. Oxylophytes
   B. Lithophytes
   C. Eremophytes
   D. Psilophytes

8. Desert plants are generally:

   A. Succulents
   B. Heterophyllous
   C. Herbaceous
   D. Viviparous

9. The Siahan Desert touches ______.

   A. China and Afghanistan
   B. Iran and Afghanistan
   C. China and India
   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