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...