Plant damages are:

Related Mcqs:

1. Control measures to check tree damages are:

   A. Use of resistant varieties
   B. Physical
   C. Biotechnical
   D. Biological
   E. All of the above

2. Relative biological effectiveness (RBE) is usually referred to damages caused by:

   A. Pollution
   B. High temperature
   C. Low temperature
   D. Radiation

3. Various kinds of damages caused by man to forests are:

   A. Illicit removal of forest produce from the forest
   B. Encroachments
   C. Irregularities in the management and exploitation of forests
   D. Forest Fires
   E. All of the above

4. Forest damages is / are:

   A. By freezing or chilling to death young weedy plants or young organs of plants
   B. By splitting the stems of trees
   C. By causing canker in stems of trees
   D. By uprooting young plants
   E. All of the above

5. Extent of damages means:

   A. Intensity of fire and its duration
   B. Type of vegetation
   C. Intensity and time of precipitation
   D. All of the above

6. A plant, being eaten by a herbivore which in turn is eaten by a carnivore, makes a:

   A. Food chain
   B. Web of food
   C. Biomass
   D. Interdependence

7. Norman Borlaug, the American agricultural scientist and plant pathologist developed the high yield strains that greatly increased crop yields. He laid the groundwork for the green revolution and was awarded the Nobel Prize for Peace in ________

   A. 1970
   B. 1972
   C. 1974
   D. 1976

8. When a plant first begins to wilts permanently in a pot, its 54.5 gms of soil has 4.5 gms of water. The PWP of this soil is:

   A. 4.50%
   B. 9%
   C. 8.25%
   D. 16.50%

9. Relationship between nitrogen fixing bacteria and a legume plant is described as:

   A. Mutualistic
   B. Parasitic
   C. Saprophytic
   D. Commensal

10. To prevent wind and water erosion, the crop is sometimes harvested in such a way that a basal stub of the plant is left behind. This phenomenon is called:

    A. Ley farming
    B. Mulching
    C. Basin listing
    D. Strip cropping