Soil Erosion and Conservation

Q.

Which of these process(es) is/are responsible for increasing soil erosion?

1. Deforestation

2. Over- grazing

3. Plantation

4. Rainwater Harvesting

Q. The of a plant helps in preventing soil erosion.

1. Stem
2. Leaves
3. Fruits
4. Roots

Q.

Dividing steep slopes into smaller flat fields is called:

1. Plowing
2. Irrigation
3. Harvesting
4. Terracing

Q.

What is the work of soil

Q.

Mild grazing in grassland by herbivores-

1. Retards growth of grasses

2. Stimulates growth of grasses

3. Destroys vegetation

4. Arrests growth of grasses

Q. Soil erosion can be controlled by __________.

1. trees
2. winds
3. mining
4. floods

Q.

The process that transports rocks, soil and sediments to a different location is called ___ .

1. weathering

2. erosion

Q.

The process where rocks, soil and sediments are transported to a different location is called ___.

1. soil erosion

2. air pollution

3. water pollution

4. weathering

Q.

What is the major component of soil?

1. Mineral matter

2. Water

3. Organic matter

4. Air

Q.

Removal of the topmost fertile layer of soil is called soil ___.

1. Soil decomposition

2. Soil disintegration

3. Soil erosion

4. Soil formation

Q. During rainy season, removal of grass and small plants growing in an open field is highly appreciable.

1. 
   True
2. 
   False

Q. Degradation of substances into simpler nutrients is called decomposition.

1. True
2. False

Q.

A food chemist who does research on the nature of soil required for the crop is called-

1. Flavour chemist

2. Soil and plant chemist

3. Cosmatics chemist

4. None of the above.

Q.

Which among the following components help make up soil?

1. All of these

2. Rocks

3. Minerals

4. Decayed plants

Q. Why are earthworms called farmer's friends?

Q.

what types of crops grow in sandy soil, loamy soil, clayey soil

Q.

How does the rainwater cause the loss of surface soil?

Q.

Which among the following types of soil dry out quickly?

1. Sandy soil

2. Clayey soil

3. Silty soil

4. Loamy soil

Q.

Identify the plant part that helps in preventing soil erosion.

1. Stem
2. Leaves
3. Fruits
4. Roots

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Our ancestors did not practise rainwater harvesting.

1. True
2. False

Q. The removal of the topmost fertile layer of soil is called soil .

1. erosion
2. disintegration
3. formation

Q.

The method of growing crops on graduated steps on the slopes of hills and mountains is called ____ farming.

1. Organic farming

2. Commercial farming

3. Terrace farming

4. Indoor farming

Q. What is soil erosion What are the methods of preventing or reducing soil erosion

Q. Match the followings

1. Crowded
2. Costly
3. Green fields

Q. Roots prevent the top layer of the soil from washing away.

1. True
2. False