Contents of Soil

Q.

Explain soil profile

Q. Humus is present in the topmost layer of soil.

1. False
2. True

Q.

Which of the following is NOT true for soil?

1. Soil does not contain moisture.

2. Soil contains micro-organisms.

3. Soil contains air.

4. Good soil has high water absorption capacity.

Q.

Differentiate sand and soil on the basis of organic matter content.

1. Sand and soil both have an equal amount of organic content.

2. Sand has more organic content than soil.

3. Sand has less organic content than soil.

4. Sand and soil both do not contain organic content.

Q. Which of the following factors affect the soil of a particular place or region?

1. Wind and rainfall
2. Temperature
3. Humidity
4. Light

Q. Which layer of soil provides shelter for many living organisms?

1. A-horizon
2. B-horizon
3. Bedrock
4. C-horizon

Q.

What do you mean by humus?

Q.

Factors which are the reason behind the variation of water content in different types of soil are:

1. Availability of water

2. Differences in the rate of evaporation

3. Capacity to retain water

4. Differences in the organic content

Q.

Humus is a major factor that decides the soil structure.

1. True

2. False

Q.

Which of the following statement regarding soil is incorrect?

1. Soil contains air and water.

2. Good soil contains less organic content.

3. Soil contains micro-organisms.

4. Good soil has good water absorption capacity.

Q. Water, wind, hydration and living organisms influence soil formation.

1. True
2. False

Q. Humus is a major factor that decides the soil structure.

1. True
2. False

Q.

The top layer of the soil is the one which contains the least organic content.

1. True

2. False

Q.

Humus makes the soil _______________.

Q. The soils which have supported agriculture for centuries without much manuring or fallowing are _____________.

1. alluvial and late rite soils
2. red and laterite soils
3. black and alluvial soils
4. laterite and black soils

Q. Which of the following helps in the formation of humus?

1. Earthworm
2. Lion
3. Birds
4. Leech

Q. Which horizon is the home for many living organisams?

1. B-horizon
2. C-horizon
3. A-horizon
4. D-horizon

Q. Which horizon is the home for many living organisams?

1. B-horizon
2. C-horizon
3. A-horizon
4. D-horizon

Q.

Which of the following factors is not responsible for soil formation?

1. Wind

2. Water

3. Sun

4. Greenhouse effect

Q. Topsoil is the ____________ layer of soil.

1. Upper most
2. Middle
3. Third layer from the surface of soil
4. Lower

Q.

Which soil is better for the plant growth?

1. Loam

2. Sand

3. Clay

4. Rocks

Q. Fill in the blanks:
A vertical section through different layers of the soil is called the _________.

Q.

What is soil?

Q.

Which of the following are provided by soil to plants?

1. Water

2. Air

3. Support

4. Nutrients

Q.

Soil is said to be teeming with life because _________________.

1. soil contains micro-organisms

2. soil is made from rocks

3. soil harbors animals such as worms

4. None of the above