Soil

What is the name of A in the figure below?
1. A-horizon
2. B-horizon
3. C-horizon
4. bedrock
Which of the following is the feature of the layer A in the figure?
1. it is hard to dig it with spade
2. it has minerals
3. it has roots
4. none of these
The mixture of rock particles and humus is known as
1. soil
2. soil profile
3. bedrock
4. all of these
Which of the following are the types of soil?
1. loamy
2. sandy
3. clayey
4. all of these
Which layer is best top soil for growing plants?
1. sandy
2. loamy
3. clayey
4. red
Which of the following is a feature of loamy soil?
1. it is a mixture of sand ,clay and other particles called silt.
2. it has humus in it
3. it has right water holding capacity for growth of plants
4. all of these
Percolation rate of water in soil is highest in which soil?
1. loamy
2. sandy
3. clayey
4. red
Percolation rate of water in soil is lowest in which soil?
1. loamy
2. sandy
3. clayey
4. red
Soil holds water in it which is known as
1. soil profile
2. soil moisture
3. perculation of water in soil
4. none of these
Which soils are suitable for growing cereals?
1. clayey
2. loamy
3. both
4. none