Soil Characteristics and Seed Classification Quiz

Test your knowledge on pedology with questions about soil types, pH levels, seed classifications, and more!

#1

Which soil type has the highest water retention capacity?

Sandy soil
Loamy soil
Clay soil
Peaty soil
1 answered
#2

Which of the following is a primary macronutrient essential for plant growth?

Iron
Calcium
Nitrogen
Zinc
1 answered
#3

Which of the following is a characteristic of well-drained soil?

High water retention
Poor aeration
Slow water infiltration
Good nutrient availability
1 answered
#4

Which soil particle size is the smallest?

Sand
Silt
Clay
Loam
1 answered
#5

Which soil texture feels gritty and does not hold water well?

Sandy soil
Loamy soil
Clay soil
Peaty soil
#6

Which soil pH level is considered neutral?

pH 5
pH 6
pH 7
pH 8
1 answered
#7

Which soil horizon is also known as the subsoil?

A horizon
B horizon
C horizon
R horizon
1 answered
#8

What is the ideal pH range for most plants to grow?

4.0 - 5.5
6.0 - 7.0
7.5 - 8.5
9.0 - 10.0
1 answered
#9

Which seed classification method involves grouping seeds based on their size and shape?

Endogenous classification
Exogenous classification
Morphological classification
Physiological classification
#10

Which soil horizon contains the highest concentration of organic matter?

A horizon
B horizon
C horizon
O horizon
#11

Which of the following is NOT a factor affecting soil formation?

Parent material
Climate
Topography
Photosynthesis
#12

Which of the following is NOT a function of soil organic matter?

Improving soil structure
Increasing soil pH
Enhancing nutrient retention
Supporting microbial life
#13

Which soil organism is responsible for converting organic matter into nutrient forms accessible to plants?

Earthworms
Nematodes
Fungi
Bacteria
#14

Which soil horizon contains weathered parent material but lacks significant organic matter?

O horizon
A horizon
B horizon
C horizon
#15

What is the term for the process of breaking down rock and organic material into smaller particles by physical, chemical, or biological processes?

Erosion
Weathering
Deposition
Leaching
#16

Which seed classification method involves grouping seeds based on their reproductive structures?

Endogenous classification
Exogenous classification
Morphological classification
Physiological classification
#17

Which seed classification method involves grouping seeds based on their germination behavior?

Endogenous classification
Exogenous classification
Morphological classification
Physiological classification
#18

Which seed classification method involves grouping seeds based on their internal structure?

Endogenous classification
Exogenous classification
Morphological classification
Physiological classification
#19

Which seed classification method involves grouping seeds based on their growth habit?

Endogenous classification
Exogenous classification
Morphological classification
Physiological classification

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