PCA Insects Exam Newest With Complete 100 Questions And Correct
Detailed Answers| Brand New Version 2026
1. Pheromone mating disruption is used in management programs in California to
control? codling moth
2. How do piercing sucking mouthparts differ from other types of mouthparts?
mandible and maxillae are modified into stylets
3. Which type of insect is most often killed when it feeds on plants treated with
pesticides? leafhoppers
4. White flies are one of the primary targets for which of these natural enemies?
Encarsia formosa
5. Hyposoter spp. are parasites of dozens of different types of? caterpillars
6. Transgenic plants for control of arthropod pests have been developed? Bacillus
thuringiensis
7. Which of these factors can enhance reproductive success of insects when
resources are low? Laying many eggs
8. Which of these statements defines carrying capacity? the maximum population
a given environment will support
9. Which insect mortality factor is sometimes density-dependent? action of
natural enemies
10. Monitoring the frass of which insect pests can be an efficient identifier of
larval instar present? California oakworm
11. Which statement describes a distinguishing characteristic of grape mealybug?
all life stages are present throughout the year
12. The body regions of a spider include the? abdomen and cephalothorax
13. Which insect order has some species with sucking mouthparts? Diptera
, 14. What is the difference between contact and stomach insecticides? contact
insecticide must be touched to be effective, stomach insecticide must be
ingested to be effective
15. The feeding damage and webbing on these apricots was most likely caused
by? European earwig
16. The control of Cottony cushion scale by the vedalia beetle is an example of
which type of control? Classical Biological Control
17. Which of these pests has gradual metamorphosis? termites
18. Why does the development rate of insects increase when the temperature
increases within their species-specific threshold? chemical reaction occur more
frequently and proceed more rapidly at higher temperatures
19. Which application technique conserves natural enemies most effectively? spot
treatments
20. Which of these insects feeds exclusively on nectar and pollen as an adult and
other insects during its larval stage? syrphid fly
21. Which statement describes an invasive species? a non-native species that is
likely to cause harm
22. Which component of a beetles mouthparts enables it to bite off and chew
pieces? mandible
23. How does the molting process begin? growth ceases and the exoskeleton is
discarded
24. Insect species which feed on a wide range of host material are described as?
polyphagous
25. In what way do parasitoids differ from predators? Parasitoids live on or within
their hosts while immature, and predators are always free living
26. A trait inherited by a pest individual that allows it to succeed and that kills
most other individuals in the population is called? pesticide resistance
Detailed Answers| Brand New Version 2026
1. Pheromone mating disruption is used in management programs in California to
control? codling moth
2. How do piercing sucking mouthparts differ from other types of mouthparts?
mandible and maxillae are modified into stylets
3. Which type of insect is most often killed when it feeds on plants treated with
pesticides? leafhoppers
4. White flies are one of the primary targets for which of these natural enemies?
Encarsia formosa
5. Hyposoter spp. are parasites of dozens of different types of? caterpillars
6. Transgenic plants for control of arthropod pests have been developed? Bacillus
thuringiensis
7. Which of these factors can enhance reproductive success of insects when
resources are low? Laying many eggs
8. Which of these statements defines carrying capacity? the maximum population
a given environment will support
9. Which insect mortality factor is sometimes density-dependent? action of
natural enemies
10. Monitoring the frass of which insect pests can be an efficient identifier of
larval instar present? California oakworm
11. Which statement describes a distinguishing characteristic of grape mealybug?
all life stages are present throughout the year
12. The body regions of a spider include the? abdomen and cephalothorax
13. Which insect order has some species with sucking mouthparts? Diptera
, 14. What is the difference between contact and stomach insecticides? contact
insecticide must be touched to be effective, stomach insecticide must be
ingested to be effective
15. The feeding damage and webbing on these apricots was most likely caused
by? European earwig
16. The control of Cottony cushion scale by the vedalia beetle is an example of
which type of control? Classical Biological Control
17. Which of these pests has gradual metamorphosis? termites
18. Why does the development rate of insects increase when the temperature
increases within their species-specific threshold? chemical reaction occur more
frequently and proceed more rapidly at higher temperatures
19. Which application technique conserves natural enemies most effectively? spot
treatments
20. Which of these insects feeds exclusively on nectar and pollen as an adult and
other insects during its larval stage? syrphid fly
21. Which statement describes an invasive species? a non-native species that is
likely to cause harm
22. Which component of a beetles mouthparts enables it to bite off and chew
pieces? mandible
23. How does the molting process begin? growth ceases and the exoskeleton is
discarded
24. Insect species which feed on a wide range of host material are described as?
polyphagous
25. In what way do parasitoids differ from predators? Parasitoids live on or within
their hosts while immature, and predators are always free living
26. A trait inherited by a pest individual that allows it to succeed and that kills
most other individuals in the population is called? pesticide resistance
