questions and answers 2024\2025 A+
Grade
Bioaccumulation
- correct answer The accumulation of a substance, such as a toxic chemical, in various tissues of a living
organism.
Biomagnification
- correct answer Accumulation of pollutants at successive levels of the food chain
abiotic factors
- correct answer natural control measures within the environment.
EX: climactic factors, air/water pollution, topographic features.
Biological Control
- correct answer The use of natural enemies to control pests.
EX: Predators, Parasites, Pathogens
Cultural Control
- correct answer These are Practices that reduce pest establishment, reproduction, dispersal and
survival.
EX: Mowing, irrigation, aeration, fertilization and sanitation.
Genetic control
- correct answer Making use of plant varieties that are naturally resistant to insect feedings.
Mechanical/Physical control
- correct answer Kills a pest directly or makes its environment unsuitable
, EX: Rodent traps, deer fences, mulches, barriers
Regulatory control
- correct answer Removal of pests that cant be controlled at a local level. Utilizes quarantines to prevent
entry of pests at airports or ocean ports and can be used to remove pests with government power. (i.e.
draining standing water that provides breeding sites for mosquitos.)
Mode of action
- correct answer How chemicals kill a pest
Site of action
- correct answer The specific biological system affected within the pest
Economic threshold
- correct answer The point at which the economic loss caused by pest damage outweighs the cost of
applying a pesticide.
(Treat pests when they pass the economic threshold)
Economic injury level
- correct answer the pest population density that causes losses equal to the cost of control measures
Action threshold
- correct answer the predetermined level at which pest control is needed
Certified applicator
- correct answer A person qualified to apply or supervise the application of restricted-use pesticides.
Private applicator
- correct answer A certified applicator who uses or supervises the use of any restricted-use pesticide to
produce an agricultural commodity.
Commercial applicator
- correct answer A certified applicator who uses or supervises the use of pesticides for purposes other
than those covered under a private applicator certification.