Rocks and Soil Formation
Agricultural Science · 50 practice questions
Rock formation; factors affecting rock weathering and soil formation; physical properties of soil (soil profile, components, texture, structure); chemical properties (acidity/alkalinity, chemical components e.g. silicates).
- Identify major rock types and their formation.
- Identify soil types/properties and the factors/processes of soil formation.
- Differentiate soil horizons.
- Compute soil component proportions and determine soil pH and water-holding capacity.
Try a few questions
- Practice question 1
On the standard soil pH scale, which mainly runs from 0 to 14, a reading of 7 is generally considered
- A.neutral
- B.strongly acidic
- C.strongly alkaline
- D.outside the possible range of soil pH
Show the answer
A. neutral
A pH of 7 sits at the midpoint of the scale, marking the neutral point.
- Practice question 2
A soil's colour is mainly significant because it can indicate
- A.the exact market price of the land
- B.the political ownership history of the land
- C.the currency used in nearby agricultural trade
- D.the level of organic matter or the presence of certain minerals like iron oxides
Show the answer
D. the level of organic matter or the presence of certain minerals like iron oxides
Dark soils often signal high organic matter, while red tones suggest iron oxide presence.
- Practice question 3
The topsoil (A horizon) is mainly characterized by
- A.a complete absence of any organic matter
- B.the highest concentration of unweathered bedrock
- C.the lowest level of biological activity in the profile
- D.higher organic matter content compared to deeper layers
Show the answer
D. higher organic matter content compared to deeper layers
Topsoil is enriched with organic matter from decomposing plant material.
More UTME Agricultural Science topics
- Factors of Agricultural Production
- Farm Surveying and Farmstead Planning
- Forms and Classification of Major Farm Animals in West Africa
- Meaning and Scope of Agriculture
- Basic Economic Principles
- General Terminologies in Animal Production
- Importance of Agriculture
- Simple Farm Tools
- Soil Water and Soil Conservation
- Agricultural Ecology
- Anatomy and Physiology of Farm Animals
- Farm Machinery and Implements
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