NATIONAL AGRICULTURAL PEST CONTROL-
ANIMAL PEST CONTROL Exam Preparation With
Complete Questions And Correct Answers With Rationales
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1. Which of the following best defines an animal pest in an agricultural
context?
A) Any vertebrate species present on a farm
B) Any animal that competes with humans for food, fiber, or space, or
causes economic damage to crops or livestock
C) Any invertebrate species found in stored grain
D) Any predator that feeds on domestic livestock
Answer: B. Animal pests are defined by their economic impact and
competition with agricultural production, not merely by their presence
or taxonomy.
2. Integrated Pest Management (IPM) for animal pests emphasizes:
A) Eradication of all pest species
B) Sole reliance on chemical pesticides
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C) A combination of biological, cultural, mechanical, and chemical tools,
with economic thresholds
D) Exclusion of all wildlife from farmlands
Answer: C. IPM is a holistic, decision-based approach that uses multiple
tactics and monitoring to keep pest populations below economically
damaging levels.
3. The economic injury level (EIL) for an animal pest is:
A) The pest density at which control measures become cost-effective
B) The pest density that causes yield loss equal to the cost of control
C) The pest density that triggers aesthetic damage
D) The pest density that leads to regulatory action
Answer: B. EIL is the population level at which the damage caused by
the pest equals the cost of implementing control measures.
4. Which of the following is a key characteristic of r-strategist pest
species?
A) Large body size
B) Long generation time
C) High reproductive rate and rapid population growth
D) Low fecundity
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Answer: C. R-strategists reproduce quickly and exploit transient
resources, making them prone to outbreaks.
5. A vertebrate pest species is most likely to be an r-strategist if it
exhibits:
A) Extended parental care
B) Large litter sizes and multiple generations per year
C) Low juvenile mortality
D) Highly specialized diet
Answer: B. High reproductive output and short generation times are
hallmarks of r-strategists among vertebrates (e.g., rodents).
6. The concept of "carrying capacity" in pest management refers to:
A) The maximum pesticide load a crop can tolerate
B) The number of predators a habitat can support
C) The maximum population size an environment can sustain
indefinitely
D) The economic threshold for pest control
Answer: C. Carrying capacity is the ecological ceiling beyond which a
population cannot increase due to resource limitations.
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7. An example of a density-independent factor affecting animal pest
populations is:
A) Predation
B) Parasitism
C) Severe drought
D) Intraspecific competition for food
Answer: C. Density-independent factors (e.g., weather, fire) affect
populations regardless of their density.
8. Which of the following is a density-dependent mortality factor for
rodent pests?
A) Temperature extremes
B) Flooding
C) Availability of nesting sites
D) Pesticide application at a fixed rate
Answer: C. Availability of nesting sites becomes limiting as population
density increases, thus it is density-dependent.
9. The sterile insect technique (SIT) is a form of:
A) Cultural control
B) Genetic/autocidal control