Computational Questions — Crop Protection Reviewer Questions

600 board-style Computational Questions items for the Agriculturist Licensure Examination. Try 30 questions free; lifetime access is ₱49. Group pesticides by mode of action rather than by trade name. The examination asks about resistance management far more often than about products.

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Sample Computational Questions questions with answers and explanations

Board-style items taken from the Crop Protection bank. Every answer is explained, which is the part that makes a review question worth doing twice.

Entomology | Pest population density — A crop field sample of 10 m² contained 24 insects. What is the pest population density?
- A. 2.4 insects/m² correct
- B. 1.2 insects/m²
- C. 1.8 insects/m²
- D. 1.9 insects/m²
Why: Density=24÷10=2.4 insects/m².
Entomology | Pest population density — The pest population density in a crop field is 8 insects/m². How many insects are expected in 3 m²?
- A. 12 insects
- B. 24 insects correct
- C. 18 insects
- D. 19 insects
Why: Count=8×3=24.
Entomology | Pest population density — A scout counted 30 insects where the pest population density was 15 insects/m². What area was sampled?
- A. 1.0 m²
- B. 1.5 m²
- C. 2.0 m² correct
- D. 1.6 m²
Why: Area=30÷15=2.0 m².
Entomology | Pest population density — Four quadrats in a crop field contained 12, 14, 6, and 8 insects; each quadrat was 1 m². What is overall pest population density?
- A. 5.0 insects/m²
- B. 7.5 insects/m²
- C. 8.0 insects/m²
- D. 10.0 insects/m² correct
Why: Total count=40; total area=4; density=10.0 insects/m².
Entomology | Pest population density — Management A produced 10 insects/m² and Management B 5 insects/m² in a crop field. What is the absolute density difference?
- A. 5.0 insects/m² correct
- B. 2.5 insects/m²
- C. 3.8 insects/m²
- D. 4.0 insects/m²
Why: Difference=|10−5|=5.0 insects/m².
Entomology | Pest population density — A crop field averages 12 insects/m² across 0.5 ha. If density is uniform, approximately how many insects are present?
- A. 30,000 insects
- B. 60,000 insects correct
- C. 45,000 insects
- D. 48,000 insects
Why: Area=0.5×10,000=5,000 m²; count=12×area=60,000.
Entomology | Percent infestation — In a crop field, 30 infested plants were recorded out of 120 plants examined. What is the percent infestation?
- A. 35.0%
- B. 15.0%
- C. 25.0% correct
- D. 30.0%
Why: Percent infestation=(30÷120)×100=25.0%.
Entomology | Percent infestation — A crop field has 120 plants examined. If the percent infestation is 62.5%, how many infested plants does this represent?
- A. 38
- B. 56
- C. 60
- D. 75 correct
Why: Number=62.5%×120=75.

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Computational Questions — Crop Protection Reviewer Questions

Sample Computational Questions questions with answers and explanations

Entomology | Pest population density — A crop field sample of 10 m² contained 24 insects. What is the pest population density?

Entomology | Pest population density — The pest population density in a crop field is 8 insects/m². How many insects are expected in 3 m²?

Entomology | Pest population density — A scout counted 30 insects where the pest population density was 15 insects/m². What area was sampled?

Entomology | Pest population density — Four quadrats in a crop field contained 12, 14, 6, and 8 insects; each quadrat was 1 m². What is overall pest population density?

Entomology | Pest population density — Management A produced 10 insects/m² and Management B 5 insects/m² in a crop field. What is the absolute density difference?

Entomology | Pest population density — A crop field averages 12 insects/m² across 0.5 ha. If density is uniform, approximately how many insects are present?

Entomology | Percent infestation — In a crop field, 30 infested plants were recorded out of 120 plants examined. What is the percent infestation?

Entomology | Percent infestation — A crop field has 120 plants examined. If the percent infestation is 62.5%, how many infested plants does this represent?

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