Plants adopted to arid regions are___________________?

Related Mcqs:

1. Yield losses of rice crop due to weed infestation are___________________?

   A. 10-20%
   B. 5-15%
   C. 20-50%
   D. 20-60%

2. Agro ecological regions of sindh are_____________________?

   A. 5
   B. 3
   C. 4
   D. 1

3. There has been emphasis on the conservation of wild relatives of cultivated plants because wild plants________________?

   A. Grow better then cultivated plants
   B. Serve, as valuable fodder plants
   C. Needed to understand the origin of cu;cultivated plants
   D. Carrying many useful genes which are lost in cultivated plants

4. The herb plants have___________________?

   A. Woody stem
   B. Non-woody stem
   C. Trunk
   D. All the above

5. Plants grown in dry region are_________________?

   A. Xerophytes
   B. Thermophyts
   C. Mesophytes
   D. Halophytes

6. Mutual association between fungi and roots of plants is known as_________________?

   A. Rhizospher
   B. Mycorrhizae
   C. Root fungi
   D. None of the above

7. The leguminous plants are important in agriculture because_________________?

   A. They need very little water to grow
   B. Six crops are harvested in a year
   C. They are disease resistant
   D. Help in nitrogen economy of nature

8. Allelopathy interaction between plants playa crucial role in___________________?

   A. Ecosystems
   B. Community
   C. Both a and b
   D. non of there

9. Resistance of plants to living organism is called______________________?

   A. Abiotic resistance
   B. Biotic resistance
   C. Vertical resistance
   D. Horizantal resistance

10. Mg in plants act as___________________?

    A. Protein activator
    B. Enzyme activator
    C. Starch activator
    D. None of the above