Veera Bala Rastogi and Shalini Mahajan Solutions for Chapter: Soil, Exercise 5: PRACTICE TIME

B-horizon is lighter in colour because of the presence of a less amount of _____.

_____ soil cannot hold much water.

_____ soil is not well-aerated.

Soil has many _____ which allow water to flow down. (Pores/ dead organisms)

A good soil has good _____ holding capacity.

The removal of topsoil by strong wind and water is called _____. 

Look at the given diagram and answer the following questions.

a) Label the parts $\mathrm{A}$, $\mathrm{B}$, $\mathrm{C}$ and $\mathrm{D}$?
b) Which layer is a home for living organisms, $\mathrm{A}$ or $\mathrm{C}$?
c) Which layer is the darkest?
d) Which layer is made of small lumps of rocks, $\mathrm{C}$ or $\mathrm{D}$?

Water drains out very quickly from sandy soil. Why this would be a disadvantage for farmers trying to grow plants in sandy soil?