CPA Pest Identification and Management 2

Question 1

Which characteristic best distinguishes a spider from an insect during field identification?

Accepted Answer

Spiders have 8 legs and 2 body segments

Answer

Spiders have 6 legs and 3 body segments

Answer

Spiders have wings in the adult stage

Answer

Spiders have antennae and compound eyes

Question 2

A grower reports yellowing leaves with fine webbing on the undersides. The most likely pest is:

Accepted Answer

Two-spotted spider mite

Answer

Aphid

Answer

Whitefly

Answer

Thrips

Question 3

Which of the following is an example of a pheromone trap used in pest monitoring?

Accepted Answer

Delta trap with a sex-attractant lure for moths

Answer

Yellow sticky card for fungus gnats

Answer

Blue sticky trap for thrips

Answer

Light trap for general insect surveillance

Question 4

When scouting for soybean aphids, a pest manager counts the number of aphids per plant. This practice is called:

Accepted Answer

Sequential sampling

Answer

Binomial sampling

Answer

Absolute density estimation

Answer

Presence-absence sampling

Question 5

Glassy-winged sharpshooter is a significant pest primarily because it:

Accepted Answer

Vectors Xylella fastidiosa, causing Pierce's disease in grapevines

Answer

Directly feeds on grape berries reducing yield

Answer

Lays eggs inside vine shoots killing new growth

Answer

Produces honeydew that promotes sooty mold on fruit

Question 6

Which life stage of a pest is MOST commonly targeted by systemic insecticides applied as a soil drench?

Accepted Answer

Root-feeding larvae or soil-dwelling nymphs

Answer

Adult flying stage

Answer

Eggs on leaf surfaces

Answer

Pupae in crop debris

Question 7

In integrated pest management, the 'economic injury level' (EIL) is defined as:

Accepted Answer

The pest density at which the cost of control equals the value of damage prevented

Answer

The pest density that causes the first visible crop damage

Answer

The maximum pest density tolerable without economic loss

Answer

The pest density below which no management action is needed