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AGRICULTURAL SCIENCE SS1
Contributed by: Onosue
  • 1. The hard unweathered rock layer is known as
A) Horizon K
B) Horizon I
C) Horizon S
D) Horizon R
  • 2. Soil profile is best described as
A) soil structure
B) horizontal section of soil
C) vertical section of soil
D) soil texture
  • 3. Limestone is an example of
A) Metamorphic rock
B) Sedimentary rock
C) Volcanic ash
D) Igneous rock
  • 4. The process by which rocks break down to form soil is called
A) Erosion
B) Compaction
C) Sedimentation
D) Weathering
  • 5. Rocks are best defined as
A) liquid materials in the soil
B) solid materials made of minerals
C) organic farm materials
D) decayed plants
  • 6. Simple farm tools are mainly operated by ______
A) Engine
B) Hand
C) Electricity
D) Battery
  • 7. Which rock is formed from magma?
A) Metamorphic
B) Igneous
C) Sedimentary
D) Limestone
  • 8. Soil formation is the process by which soil develops from
A) Soils
B) Limestock
C) fertilizers
D) parent rocks
  • 9. Which of the following is NOT a type of weathering?
A) Physical
B) Mechanical cultivation
C) Chemical
D) Biological
  • 10. The downward movement of soluble minerals in soil is called
A) leaching
B) weathering
C) deposition
D) erosion
  • 11. The soil horizon richest in humus is
A) Horizon S
B) Horizon A
C) Horizon B
D) Horizon K
  • 12. Marble is formed from
A) Basalt
B) Limestone
C) Sandstone
D) Granite
  • 13. The major components of soil do not include
A) None of the above
B) Water
C) Mineral matter
D) Organic matter
  • 14. Soil texture refers to the
A) Size of soil particles
B) Arrangement of soil particles
C) Colour of soil
D) Depth of soil
  • 15. Which soil property affects water retention?
A) pH
B) Texture
C) Colour
D) Salinity
  • 16. Clay soil is best described as
A) Poor in nutrients
B) ticky when wet
C) Well drained
D) Loose and gritty
  • 17. Horizon R is
A) Topsoil
B) Bedrock
C) Organic layer
D) Parent material
  • 18. ___ tool is used for gathering and leveling soil
A) Axe
B) Rake
C) Cutlass
D) Hoe
  • 19. Horizon O
A) Organic layer
B) Parent material
C) Topsoil
D) Bedrock
  • 20. ____ is the ability of soil to retain water for plant use
A) Porosity
B) Water holding capacity
C) Structure
D) Texture
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