Available Answers

1. 1.

   Fill in the blanks.

   1. The outer layer of the earth is called ____________.
   2. Soil is formed by ___________ of rocks and minerals.
   3. The weathering of rocks caused by the action of plants and animals is known as ____________ weathering.
   4. The roots of tall plants can reach up to the _____________.
2. 2.

   Fill in the blanks.

   1. Clayey soil is _________ in texture.
   2. The uppermost layer of soil contains lots of dead and decaying matter called __________.
   3. The lowermost layer consists of large-sized particles called ____________.
   4. The space between the soil particles is occupied by air and ___________.
   5. ___________ soil has a high water-holding capacity.
3. 3.

   Tick the most appropriate answer.

   1. The uppermost layer of soil that has a good water-holding capacity forms the
      1. A-horizon
      2. B-horizon
      3. C-horizon
      4. bedrock
   2. The layer of soil with weathered parent rock material forms the
      1. A-horizon
      2. B-horizon
      3. C-horizon
      4. bedrock
   3. Which of the following soils is the best soil for the growth of plants?
      1. Clayey soil
      2. Loamy soil
      3. Sandy soil
      4. Desert soil
   4. The soil with a very high water-holding capacity is
      1. Clayey soil
      2. Sandy soil
      3. loamy soil
      4. humus
   5. The plants of Uttar Pradesh, Haryana and Punjab are dominated by
      1. black soil
      2. alluvial soil
      3. desert soil
      4. mountain soil.
4. 4.

   Fill in the blanks.

   1. The most fertile layer of the soil is ____________.
   2. Breaking down of huge pieces of rocks into fine particles by the action of water and changing temperature is called ____________.
   3. ____________ soil has the least water-holding capacity.
   4. Land should not be left uncultivated for long since the ___________ soil gets eroded easily.
   5. Desert soil lacks in ___________ due to a thin vegetation cover.
5. 5.

   Define Weathering.

6. 6.

   Differentiate between clayey soil and loamy soil.