Fundamentals QUESTIONS AND CORRCT ANSWERS
(VERIFIED ANSWESR) PLUS RATIONALES Q& A 2026
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1. What is the primary purpose of pesticides?
A. To increase soil nutrients
B. To control pests that damage crops
C. To improve seed germination
D. To attract pollinators
Rationale: Pesticides are chemical or biological agents used to
manage pests such as insects, weeds, and pathogens that harm
crops.
Correct Answer: B. To control pests that damage crops
2. Which of the following is considered a pest?
A. Aphids feeding on tomatoes
B. Birds that eat weeds
C. Earthworms improving soil structure
D. Ladybugs controlling aphids
Rationale: Pests are organisms that interfere with human
activities or damage crops. Beneficial organisms like ladybugs
are not pests.
,Correct Answer: A. Aphids feeding on tomatoes
3. Which label signal word indicates the highest toxicity?
A. Caution
B. Warning
C. Danger
D. Notice
Rationale: Pesticide labels use signal words to indicate toxicity:
"Caution" is least toxic, "Danger" is most toxic.
Correct Answer: C. Danger
4. What is the main route of pesticide exposure for
applicators?
A. Inhalation
B. Absorption through skin
C. Ingestion
D. All of the above
Rationale: Applicators can be exposed via inhalation, skin
absorption, and accidental ingestion; all routes are significant.
Correct Answer: D. All of the above
5. Which PPE (personal protective equipment) is most
important when handling concentrated pesticides?
,A. Gloves and protective clothing
B. Safety glasses
C. Respirator
D. All of the above
Rationale: Handling concentrated pesticides safely requires full
protection: gloves, clothing, eye protection, and sometimes
respirators.
Correct Answer: D. All of the above
6. Which of these is a herbicide?
A. Fungicide
B. Glyphosate
C. Insecticide
D. Bactericide
Rationale: Glyphosate is a chemical used specifically to control
weeds (herbicide).
Correct Answer: B. Glyphosate
7. What is the purpose of an MSDS/SDS?
A. To provide nutritional information
B. To provide safety and handling information for pesticides
C. To indicate the cost of the pesticide
D. To advertise the product
, Rationale: Material Safety Data Sheets (MSDS/SDS) provide
information on pesticide hazards, handling, storage, and
emergency measures.
Correct Answer: B. To provide safety and handling information
for pesticides
8. Which factor increases the risk of pesticide runoff into
water?
A. Proper calibration
B. Applying before rainfall
C. Using recommended rates
D. Avoiding drift
Rationale: Applying pesticides just before rainfall can cause
runoff into streams or groundwater.
Correct Answer: B. Applying before rainfall
9. What does “calibration” of a pesticide sprayer ensure?
A. Even coverage and correct dosage
B. Faster application speed
C. Reduced soil erosion
D. Increased crop yield
Rationale: Proper calibration ensures the correct amount of
pesticide is applied evenly, preventing under- or over-
application.