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Soil

Comprehensive quiz covering soil formation, composition, horizons, properties, types, and organisms in soil.

16 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following factors is/are responsible for weathering?

  1. Temperature changes
  2. Wind
  3. Water
  4. All of the above
  5. Frost
Question 2 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. Weathering is a very fast and abrupt process during which the parent rock material breaks down into fine particles.
b. Soil is a life support medium, providing sustenance to plants and animals.
c. Rocks expand on heating and contract on cooling.

  1. Only b
  2. Both a and c
  3. Only a
  4. Both b and c
  5. Only c
Question 3 Multiple Choice (Single Answer)

Plants grow in the _____________. This layer of Earth's crust supports the growth of plants in many ways.

  1. topsoil
  2. regolith
  3. subsoil
  4. bedrock
  5. eluviation layer
Question 4 Multiple Choice (Single Answer)

Which of the following is not a property of B-horizon?

  1. Harder and compact.
  2. Layer rich in soluble minerals and iron oxides.
  3. Light in colour.
  4. Rich in humus.
  5. Roots of tall plants generally reach this level.
Question 5 Multiple Choice (Single Answer)

Which of the following is/are the factor(s) influencing the nature of soil?

  1. Parent material
  2. Climate
  3. Time
  4. All of the above
  5. Living organisms
Question 6 Multiple Choice (Single Answer)

Which of the following is not a property of the A-horizon?

  1. Dark in colour.
  2. Remains of plants and animals are not found in this layer.
  3. Very fertile.
  4. Soft, porous and holds enough water.
  5. Living organisms are present.
Question 7 Multiple Choice (Single Answer)

Which of the following soils is used to make matkas and surahis?

  1. Black soil
  2. Forests and hill soil
  3. Alluvial soil
  4. Desert soil
  5. Red soil
Question 8 Multiple Choice (Single Answer)

Match the following:

 
a. Sand 1. Below 0.05 mm
b. Gravel or stones 2. Above 2.0 mm
c. Silt and clay 3. 0.05 to 2.0 mm
  1. a - 3, b - 2, c - 1
  2. a - 3, b - 1, c - 2
  3. a - 2, b - 3, c - 1
  4. a - 2, b - 1, c - 3
  5. a - 1, b - 2, c - 3
Question 9 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. Soil having particles of only one particular size is not fertile.
b. Sandy soil is highly porous and does not hold much water.
c. Xerophytic plants that grow in loamy soils serve as wind breakers and also help in binding the soil.

  1. Only c
  2. Both a and b
  3. Only a
  4. Both b and c
  5. Only b
Question 10 Multiple Choice (Single Answer)

Which of the following factors is/are responsible for soil erosion?

  1. Deforestation
  2. Overgrazing
  3. Poor farming methods
  4. Forest fires
  5. All of the above
Question 11 Multiple Choice (Single Answer)

Match the following:
a. Weathering 1. Vertical section of the soil to show different layers of soil
b. Soil profile 2. Relative proportion of different sized particles in the soil
c. Soil texture 3. Process of soil formation that involves disintegration of large pieces of rocky material into fine particles
  1. a - 3, b - 2, c - 1
  2. a - 3, b - 1, c - 2
  3. a - 2, b - 1, c - 3
  4. a - 1, b - 2, c - 3
  5. a - 2, b - 3, c - 1
Question 12 Multiple Choice (Single Answer)

Match the following
1. Loamy soil a. Soil having high percentage (70-80%) of bigger particles like sand particles
2. Clayey soil b. Soil having mixture of big and fine particles
3. Sandy soil c. Soil having high percentage of fine particles like clay particles and very less sand
  1. 1 - b, 2 - c, 3 - a
  2. 1 - b, 2 - a, 3 - c
  3. 1 - a, 2 - c, 3 - b
  4. 1 - a, 2 - b, 3 - c
  5. 1 - c, 2 - b, 3 - a
Question 13 Multiple Choice (Single Answer)

Which of the following statements is/are false?
a. The greater the humus in the soil, the the more fertile is the soil.
b. Clayey soils are heavy soils and is thus not able to support plant growth.
c. Loamy soils contain enough air due to the presence of some large particles.

  1. Only a
  2. a and b
  3. Only b
  4. a and c
  5. Only c
Question 14 Multiple Choice (Single Answer)

Which of the following statement is/are false?
a. Dark coloured soils are rich in organic matter than the light coloured soils.
b. The difference in soil colour does not depends on the geographical location of the soil.
c. Microorganisms cause the decomposition of dead plants and animals and release the minerals back to the soil.

  1. Only a
  2. a and b
  3. Only b
  4. a and c
  5. Only c
Question 15 Multiple Choice (Single Answer)

Which of the following statements is/are false?

a. Rock or soil particles of different sizes are an important component of soil.
b. Soil consists of only inorganic matter.
c. Water containing inorganic salts is an important component of soil.

  1. Only a
  2. Both a and c
  3. Only b
  4. Both b and c
  5. Only c
Question 16 Multiple Choice (Single Answer)

Which of the following organisms is/are found in the soil?

  1. Earthworm
  2. Bacteria
  3. Fungi
  4. Roundworm
  5. All of the above
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