Which of the following situations – ‘A’ or ‘B’ – is advantageous
for absorption of water and minerals? Why?
Situation ‘A’ : Growth and branching of roots in the C-horizon.
Situation ‘B’ : Growth and branching of roots in A and Bhorizons.
Read the following statements and give the appropriate terms
for each of them.
(a) The process of breakdown of rocks by the action of wind,
water, sunlight.
(b) Removal of top soil during heavy rains or strong winds.
(c) Accumulation of wastes in the soil generated by human
activity which alter the features of soil.
(d) The process of movement of water into deeper layers of
soil.
Which one of the following pairs is correctly matched ?
(a)
Automobile industry
… Los Angeles
(b)
Shipbuilding industry
… Lusaka
(c)
Aircraft industry
… Florence
Soil has particles of different sizes. Arrange the words given
below in increasing order of their particle size.
Rock, Clay, Sand, Gravel, Silt
Which one of the following types of industries produces raw materials
for other industries?
(a) Cottage Industries
(c)
Basic Industries
(b) Small-scale Industries
(d) Footloose Industries
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.
(a) (ii) and (iv) (b) (i) and (iii)
(c) (ii) and (iii) (d) (i) and (ii)
Soil conservation measures are mainly aimed at protecting
which of the following?
(a) Plants
(b) Top soil
(c) Sub soil
(d) Soil organisms
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