Improving Soil Quality 2 (Form 1, Biology)

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A 50-question quiz on Cameroon's Form 1 soil topics.

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YAKILI LMS

Cameroon

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Improving Soil Quality 2 (Form 1, Biology)


Froggy Jumps Improving Soil Quality 2 (Form 1, Biology)Version en ligne A 50-question quiz on Cameroon's Form 1 soil topics. par YAKILI LMS 1 What is capillarity in soil? a The weight of soil particles b The rate at which soil drains water c The rise of liquid in narrow spaces due to adhesion and cohesion 2 Which soil sample shows highest capillarity? a Sand with large particles b Coarse gravel c Fine-grained soil 3 What property measures how easily soil holds water? a Texture b Capillarity c Color 4 What tool helps compare capillarity of soils? a Capillary rise setup b Soil thermometer c pH meter 5 Which soil type typically has higher porosity? a Clay b Silt c Sandy loam 6 Porosity is the fraction of soil that is a Pore space b Solid particles c Organic matter 7 How do you measure porosity in a lab? a Determine volume of voids / total volume b Weigh dry soil c Measure pH 8 Which soil has the largest pore spaces? a Silt b Gravel c Clay 9 Air presence in soil is called a Soil aeration b Soil moisture c Soil salinity 10 Why is soil air important for roots? a Provides oxygen for respiration b Keeps seeds dry c Gives nutrients directly 11 Percentage of air in soil is determined by a pH level b Porosity and compaction c Color and texture 12 What reduces soil air? a Mulching b Compaction c Irrigation 13 Humus is primarily a Water content b Completely decayed organic matter c Inert mineral material 14 Humus improves soil by increasing a Fertility and structure b pH to extreme c Salinity 15 How do you determine humus percentage? a Laboratory analysis of organic matter b Test pH only c Observe color alone 16 Why is pH of soil tested? a To know acidity or alkalinity affecting nutrients b To check moisture only c To measure soil depth 17 What pH range is generally suitable for most crops? a 4.0–5.0 b 8.5–9.0 c 6.0–7.5 18 A soil test shows pH 5.0. This is a Neutral b Alkaline c Acidic 19 High organic matter typically a Decreases fertility b Improves water retention c Reduces porosity 20 What is a main cause of soil quality loss? a Erosion and deforestation b Excess rainfall only c Over-irrigation only 21 Machinery compaction affects soil by a Increasing worm activity b Reducing porosity c Increasing nutrient content 22 Organic matter in soil mainly comes from a Water droplets b Plant and animal residues c Mineral particles 23 Which practice helps improve soil quality? a Overgrazing b Crop rotation c Constant tillage 24 Which practice harms soil quality? a Deforestation b Mulching c Cover cropping 25 What is humus most resistant to? a Erosion b Water loss c Decomposition 26 Which soil type generally drains quickly? a Clay b Loamy c Sandy 27 Which soil improves drainage? a Increasing compaction b Removing pore spaces c Adding organic matter 28 Which factor improves soil structure? a Compaction b Earthworms c Heavy machinery 29 What does soil porosity affect most? a Wind erosion b Nutrient uptake only c Water retention 30 High porosity usually means a Less root growth b More pore space for air and water c Less drainage 31 What is a common indicator of soil health? a Texture alone b Color alone c Diversity of soil organisms 32 Which practice reduces soil erosion? a Bare fallow b Contour farming c Straight-row farming 33 What is soil texture dominated by? a Color alone b Proportions of sand, silt, clay c pH alone 34 Which soil amendment increases humus? a Composted plant material b Chemical fertilizer only c Pure sand 35 Which soil layer is richest in humus? a C horizon b Topsoil (A horizon) c B horizon 36 Which factor most affects soil pH? a Sunlight only b Soil color c Parent material and rainfall 37 What is the main benefit of soil aeration? a Increases salinity b Improves root respiration c Decreases nutrient availability 38 Which measurement indicates how much water soil can hold? a Field capacity b Porosity only c Bulk density 39 What causes soil compaction? a Heavy traffic or machinery b Low rainfall c Dry weather only 40 Which method reduces salinization risk? a Watering sparingly b Leaching excess salts with water c Adding nitrogen fertilizer 41 Which soil improvement fosters microbial activity? a Chemical pesticides b Deep tillage c Adding organic mulch 42 What is a sign of soil degradation? a Erosion gullies b High humus content c Stable crust 43 Which practice protects soil moisture? a Bare soil exposure b Tillage after every rain c Mulching 44 Which soil component provides nutrients? a Minerals only b Water only c Organic matter 45 Which soil state increases crop yield? a No organic matter b Balanced pH and organic matter c Very acidic pH only 46 What is the main aim of soil testing? a Forecast rainfall b Guide fertilization and amendments c Diagnose pests only 47 Soil air percentage is highest when soil is a Completely dry b Compacted and wet c Loose and well-aerated 48 Which activity increases soil organic matter fastest? a Drought b Applying salt c Adding compost 49 Which soil feature enhances root growth? a Dense blocks b Good structure with pores c Flat surface 50 What causes poor soil aeration? a Dry weather only b Compaction from heavy use c High rainfall only

Improving Soil Quality 2 (Form 1, Biology)

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Improving Soil Quality 2 (Form 1, Biology)Version en ligne

par YAKILI LMS

What is capillarity in soil?

Which soil sample shows highest capillarity?

What property measures how easily soil holds water?

What tool helps compare capillarity of soils?

Which soil type typically has higher porosity?

Porosity is the fraction of soil that is

How do you measure porosity in a lab?

Which soil has the largest pore spaces?

Air presence in soil is called

Why is soil air important for roots?

Percentage of air in soil is determined by

What reduces soil air?

Humus is primarily

Humus improves soil by increasing

How do you determine humus percentage?

Why is pH of soil tested?

What pH range is generally suitable for most crops?

A soil test shows pH 5.0. This is

High organic matter typically

What is a main cause of soil quality loss?

Machinery compaction affects soil by

Organic matter in soil mainly comes from

Which practice helps improve soil quality?

Which practice harms soil quality?

What is humus most resistant to?

Which soil type generally drains quickly?

Which soil improves drainage?

Which factor improves soil structure?

What does soil porosity affect most?

High porosity usually means

What is a common indicator of soil health?

Which practice reduces soil erosion?

What is soil texture dominated by?

Which soil amendment increases humus?

Which soil layer is richest in humus?

Which factor most affects soil pH?

What is the main benefit of soil aeration?

Which measurement indicates how much water soil can hold?

What causes soil compaction?

Which method reduces salinization risk?

Which soil improvement fosters microbial activity?

What is a sign of soil degradation?

Which practice protects soil moisture?

Which soil component provides nutrients?

Which soil state increases crop yield?

What is the main aim of soil testing?

Soil air percentage is highest when soil is

Which activity increases soil organic matter fastest?

Which soil feature enhances root growth?

What causes poor soil aeration?