Available Answers

1. 1.

   Fill in the blanks.

   1. _________________ is the topmost layer of the soil.
   2. The _________________ soil is rich in humus.
   3. _________________ lies below the subsoil.
   4. The _________________ of plants hold soil particles together.
   5. Land loses its _________________ due to soil erosion.
2. 2.

   Tick (√) the correct option.

   1. Afforestation/deforestation helps to conserve soil.
   2. Ploughing of hilly slopes leads to soil erosion/conservation.
   3. Terrace farming is done on plains/hill slopes.
   4. overgrazing by cattle decreases/increases grass cover.
   5. The roots/trunk of trees bind soil particles together.
3. 3.

   Complete the flow chart given below.

   

4. 4.

   Choose the correct answer.

   1. The organic matter formed from the remains of dead plants and animals by the action of microorganisms in the soil is called _________________.
      1. minerals
      2. humus
      3. matter
   2. Humus is present in the _________________.
      1. topsoil
      2. bedrock
      3. subsoil
   3. The protection of soil against erosion is called _________________.
      1. erosion
      2. conservation
      3. composting
   4. Soil gets eroded by _________________.
      1. wind
      2. trees
      3. cover cops
   5. In hilly areas, crops should be planted on _________________.
      1. steps
      2. slopes
      3. none of these
5. 5.

   Fill in the blanks.

   1. Soil is formed by ______________ of rocks.
   2. ______________ farming is done on hill slopes.
   3. ______________ are the high boundaries of mud, built around big farms to prevent soil erosion.
   4. In places where land is barren, soil ______________ occurs.
   5. The process of cutting down of plants and trees on large numbers is called ______________. 
6. 6.

   Write true or false.

   1. Ploughing should be done on hilly slopes.
   2. Plants help in preventing soil erosion.
   3. The land gains its fertility due to soil erosion.
   4. The roots of big plants can reach the subsoil.
   5. Farmland should be left barren after a crop is harvested.