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Fundamental Agricultural Science

Agriculture

A challenging examination of global agricultural history, botany, and soil science.

farming science history

10 Questions Hard Ages 5+ Jul 29, 2026

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About this Study Set

This study set covers Agriculture through 10 practice questions. A challenging examination of global agricultural history, botany, and soil science. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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1 Which process involves the conversion of atmospheric nitrogen into ammonia by bacteria found in the root nodules of legumes?

A Nitrification
B Denitrification
C Nitrogen fixation
D Ammonification

2 What is the primary function of the 'stoma' (plural: stomata) found on the underside of plant leaves?

A Photosynthesis
B Gas exchange
C Water storage
D Glucose production

3 Which crop, known for its high caloric density, triggered a massive demographic shift in 18th-century Europe due to its ability to yield more food per acre than grain?

A Maize
B Potato
C Sugar beet
D Soybean

4 In soil science, which component is considered the 'humus' fraction that significantly increases the cation exchange capacity of the soil?

A Silt
B Clay
C Organic matter
D Sand

5 The Green Revolution, led by Norman Borlaug in the mid-20th century, primarily focused on the development of high-yielding varieties of which two crops?

A Wheat and Rice
B Maize and Sorghum
C Barley and Oats
D Cassava and Potato

6 What is the technical term for the practice of growing two or more crops in proximity to one another to maximize land use and soil health?

A Monoculture
B Poly-cropping
C Intercropping
D Fallow rotation

7 Which macronutrient is primarily responsible for leaf growth and provides the green color in plants through chlorophyll production?

A Phosphorus
B Potassium
C Nitrogen
D Calcium

8 What is the specific botanical classification of the fruit produced by the 'Oryza sativa' plant?

A Berry
B Drupe
C Caryopsis
D Pome

9 Which ancient agricultural technique, still used today, involves cutting down and burning existing vegetation to create a field for temporary cultivation?

A Terracing
B Slash-and-burn
C Drip irrigation
D Hydroponics

10 Which element is essential for plant respiration and is absorbed by roots as a byproduct of the Krebs cycle, but is primarily required as a gas in the leaves?

A Oxygen
B Hydrogen
C Carbon
D Iron

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