#1
Which of the following is a key factor contributing to soil erosion?
Intensive grazing practices
ExplanationOvergrazing accelerates soil erosion by removing protective vegetation.
#2
What is the primary greenhouse gas emitted by agricultural activities?
Nitrous oxide
ExplanationNitrous oxide is released from soil and fertilizer use, contributing to global warming.
#3
Which agricultural method involves planting a variety of crops in the same area?
Polyculture
ExplanationPolyculture promotes biodiversity and reduces susceptibility to pests and diseases.
#4
Which agricultural practice involves rotating crops in a specific order over time?
Crop rotation
ExplanationCrop rotation enhances soil fertility, reduces pests, and prevents soil depletion.
#5
What is the term used to describe the process of breaking down organic matter into humus?
Decomposition
ExplanationDecomposition recycles nutrients, enriching soil and supporting plant growth.
#6
What is the primary purpose of using conservation tillage techniques in agriculture?
To conserve water resources
ExplanationConservation tillage reduces soil disturbance, erosion, and water loss, promoting sustainability.
#7
What is the primary function of genetically modified organisms (GMOs) in agriculture?
To increase crop yield
ExplanationGMOs are engineered to enhance productivity, resistance to pests, and adaptability.
#8
Which agricultural practice aims to maintain or enhance soil fertility and prevent soil degradation?
Agroforestry
ExplanationAgroforestry integrates trees into farming systems to improve sustainability.
#9
What is the term used to describe the process of transferring pollen from one plant to another?
Pollination
ExplanationPollination is essential for plant reproduction and the production of fruits and seeds.
#10
What is the primary purpose of using pesticides in agriculture?
To control pests and diseases
ExplanationPesticides are used to manage pests and diseases that threaten crop production.
#11
Which of the following is an example of sustainable agricultural practice?
Use of drip irrigation systems
ExplanationDrip irrigation conserves water by delivering it directly to plant roots, reducing waste.
#12
Which of the following is NOT a common method of soil conservation?
Deforestation
ExplanationDeforestation exacerbates soil erosion and disrupts ecosystems, contrary to conservation goals.
#13
Which of the following is a potential consequence of agricultural runoff?
Eutrophication of water bodies
ExplanationExcessive nutrients from runoff can cause algal blooms and oxygen depletion in water.
#14
What is the primary benefit of integrated pest management (IPM) in agriculture?
Reduced reliance on chemical pesticides
ExplanationIPM combines biological, cultural, and chemical methods to minimize pest damage.
#15
Which agricultural technique involves cultivating crops without the use of soil?
Hydroponics
ExplanationHydroponics utilizes nutrient solutions to grow plants in a soilless environment.
#16
What is the primary benefit of using cover crops in agricultural systems?
Improved soil health
ExplanationCover crops protect soil from erosion, suppress weeds, and enrich soil with organic matter.
#17
Which of the following is NOT a common greenhouse gas emitted by agricultural activities?
Oxygen
ExplanationOxygen is not a greenhouse gas; common agricultural greenhouse gases include methane and nitrous oxide.