The removal of weeds by ploughing is called:

Related Mcqs:

1. The disadvantage of ploughing in arid and semi-arid zones is:

   A. Loss of soil water
   B. Soil particles became smaller
   C. Soil organisms are exposed
   D. All of these

2. A chemical, which kills the weeds, is known as:

   A. Insecticide
   B. Pesticide
   C. Herbicide
   D. Germicide

3. Removal of top soil by soil erosion result in the loss of soil:

   A. Nitrites
   B. Nitrates
   C. Nitrogen
   D. Nitric and nitrous acids

4. Digging pits on the slopes just for the accumulation of run off is called as:

   A. Contour terracing
   B. Contour trenching
   C. Beach terracing
   D. None of these

5. The soil permeability can be decreased due to blockers called:

   A. Pans
   B. Peds
   C. Clods
   D. None of these

6. 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

7. The factors governing the structure of soil are called:

   A. Topographic
   B. Temperature
   C. Biotic
   D. Edaphic climax

8. Plants growing on burnt soil are called:

   A. Heliophilous
   B. Hydrophilous
   C. Pyrophilous
   D. Pyriform

9. Plants growing on sand and gravel are called:

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

10. A group of plants living together under similar or dissimilar environmental conditions is called:

    A. Vegetation
    B. Flora
    C. Species
    D. Community