Which one of the following layers of soil is characterized by cracks and crevices?
(a) Topsoil
(b) Subsoil
(c) Parent rock
(d) Bed rock
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Q2
Rotting dead organic matter in soil is
(a) clay
(b) topsoil
(c) subsoil
(d) humus
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Q3
Mark the following statements true or false. Rewrite them correctly.
(a) The parent material contains the remains of dead plants and animals.
(b) Plants take root in the surface layer.
(c) Parent material contains mostly rock particles.
(d) The subsoil contains large quantities of organic material.
(e) A thick layer of fertile topsoil helps plant growth.
(f) Plants use the water and minerals found in surface layer for growth.
(g) Bedrock containing large unweathered rock is found below the parent material.
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Q4
Look at the soil profile and write the following names in the correct places next to the arrows.
weathered parent material, surface layer, subsoil, topsoil figure
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Q5
Soil profiles consist of three layers which are called
(a) top soil
(b) horizons
(c) subsoil
(d) bedrock