Pest Identification and Management Flashcards
7 cards from real CPA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Pest Identification and Management flashcards as text
Which characteristic best distinguishes a spider from an insect during field identification?
Answer: Spiders have 8 legs and 2 body segments
Spiders are arachnids with 8 legs and 2 body segments (cephalothorax and abdomen), while insects have 6 legs and 3 body segments.
A grower reports yellowing leaves with fine webbing on the undersides. The most likely pest is:
Answer: Two-spotted spider mite
Two-spotted spider mites produce fine webbing on leaf undersides and cause stippling and yellowing through cell-content feeding.
Which of the following is an example of a pheromone trap used in pest monitoring?
Answer: Delta trap with a sex-attractant lure for moths
Delta traps baited with sex-attractant pheromone lures are used to monitor specific moth species by attracting males.
When scouting for soybean aphids, a pest manager counts the number of aphids per plant. This practice is called:
Answer: Sequential sampling
Sequential sampling involves counting organisms per sampling unit and stopping when the cumulative count crosses a decision boundary, reducing sampling effort.
Glassy-winged sharpshooter is a significant pest primarily because it:
Answer: Vectors Xylella fastidiosa, causing Pierce's disease in grapevines
The glassy-winged sharpshooter transmits the bacterium Xylella fastidiosa, which causes Pierce's disease — a lethal threat to grapevines.
Which life stage of a pest is MOST commonly targeted by systemic insecticides applied as a soil drench?
Answer: Root-feeding larvae or soil-dwelling nymphs
Systemic insecticides taken up through roots kill root-feeding larvae and soil-dwelling nymphs that directly contact treated root tissue or plant sap.
In integrated pest management, the 'economic injury level' (EIL) is defined as:
Answer: The pest density at which the cost of control equals the value of damage prevented
The EIL is the lowest pest population density at which the cost of control equals the economic damage it prevents, making treatment worthwhile.