Q2 of 20 Page 47

Availability of water and minerals in the soil for maximum absorption by roots is in the –

The A-horizon layer of the soil is soft, porous and retains water. The roots of small plants are grow in this layer. This layer is also called topsoil.

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1

The microorganisms present in the soil require moisture (water) and nutrients for growth and survival. Choose from the options below the habitat (place) where the soil has plenty of water and nutrients.

 3

Soil conservation measures are mainly aimed at protecting which of the following?

 4

Read the following statements with reference to soil.

(i) Weathering is a very fast process of soil formation.


(ii) Percolation of water is faster in sandy soils.


(iii) Loamy soil contains only sand and clay.


(iv) Top soil contains the maximum amount of humus.


Choose the correct statements from the above.

 5

Soil has particles of different sizes. Arrange the words given below in increasing order of their particle size.

Rock, Clay, Sand, Gravel, Silt