Question 1

What percentage of the soil is organic matter?

Accepted Answer

5%

Answer

15%

Answer

25%

Answer

35%

Question 2

What is the primary factor in soil formation?

Accepted Answer

Parent material

Answer

Sunlight

Answer

Plant type

Answer

Animal activity

Question 3

Which process contributes significantly to soil formation by breaking down rocks?

Accepted Answer

Weathering

Answer

Erosion

Answer

Decomposition

Answer

Photosynthesis

Question 4

Soil horizons are differentiated based on their...

Accepted Answer

Texture and structure

Answer

Temperature

Answer

Color only

Answer

Depth alone

Question 5

Podzolization in soil formation is characterized by...

Accepted Answer

Leaching of organic matter and minerals

Answer

Rapid decomposition of organic matter

Answer

High clay activity

Answer

Accumulation of salts

Question 6

Which soil particle is the smallest in size?

Accepted Answer

Clay

Answer

Gravel

Answer

Sand

Answer

Silt

Question 7

What is a loam soil primarily characterized by?

Accepted Answer

Even mixture of sand, silt, and clay

Answer

High sand content

Answer

High clay content

Answer

High organic matter

Question 8

Brown earth soils are characterized by...

Accepted Answer

Rich humus content and good structure

Answer

Poor drainage and high acidity

Answer

Frequent waterlogging and salinization

Answer

A thin, undeveloped topsoil layer

Question 9

Gleys are typically formed in conditions of...

Accepted Answer

Poor drainage and waterlogging

Answer

Rocky terrain with minimal vegetation

Answer

High temperatures and rapid evaporation

Answer

Low organic matter and high erosion

Question 10

A healthy soil typically contains...

Accepted Answer

Diverse microbial life

Answer

Few microorganisms

Answer

Only bacteria and fungi

Answer

High levels of pollutants

Question 11

Soil pH affects...

Accepted Answer

Plant nutrient availability

Answer

Soil temperature

Answer

Soil texture

Answer

Color of the soil only

Question 12

High salinity in soil can lead to...

Accepted Answer

Reduced plant water uptake

Answer

Increased soil fertility

Answer

Lower soil temperatures

Answer

Increased plant growth

Question 13

Field capacity of soil refers to...

Accepted Answer

The maximum water content after excess water has drained away

Answer

The minimum water content for plant growth

Answer

The total water content at saturation

Answer

The water content at permanent wilting point

Question 14

Which is a physical characteristic of soil?

Accepted Answer

Texture

Answer

Bacterial presence

Answer

Nutrient content

Answer

pH level

Question 15

Soil pH affects...

Accepted Answer

Plant nutrient availability

Answer

Color of the soil only

Answer

Soil temperature

Answer

Soil texture

Question 16

What is the main benefit of crop rotation in soil management?

Accepted Answer

Reduces pest infestations

Answer

Requires more chemical fertilizers

Answer

Decreases soil fertility

Answer

Increases soil erosion

Question 17

What effect does overgrazing have on soil erosion?

Accepted Answer

Increases soil erosion

Answer

Enhances soil fertility

Answer

Improves soil structure

Answer

Reduces water runoff

Question 18

How does deep plowing impact soil structure?

Accepted Answer

Compacts the soil layers

Answer

Loosens the soil for better aeration

Answer

Increases soil porosity

Answer

Promotes root growth

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