Soil: Mock Test

While digging a land you will find different layers of soil consisting of different components like organisms, minerals, roots of plants and unweathered rocks. These layers of soil together form the …………………………………….

The rate at which water moves through porous media, such as soil is called …………………………………

Huge rocks on the action of wind, water and plants break into fine particles and form soil. This process is called ………………..

soil pollution

soil erosion

humus

weathering

Which of the following properties DOES NOT correspond to Clay soil?

Soil particles are very large.

Soil particles tightly packed together.

Soil particles leave little space for air.

Soil particles hold more water

In addition to the rock particles, the soil contains

air and water

water and plants

minerals, organic matter, air and water

water, air and plants

Which of the following types of soil has the least water holding capacity?

Clayey soil

Sandy soil

Loamy soil

A mixture of loamy and sandy soil

There are four horizons which are present in a soil profile namely horizon A, B, C and bedrock. Which of these horizons is highly rich in humus?

Horizon A

Horizon C

Both horizon A and C

Horizon B

Soil consists of various layers or horizons which have several properties. Which layer of soil is loose, porous, and holds water?

Topsoil layer

Middle soil layer

Subsoil layer

Bedrock

State TRUE or FALSE: Roots of the plants can be found in the bedrock region.

True

False

State TRUE or FALSE: Soil with the least particle size has the most water holding capacity.

True

False

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