PCA Insects Exam Questions with Detailed Verified Answers (latest
2026|2027 updates) Already Graded A+| Pest Identification,
Biological Control, IPM, Life Cycles, Damage & Resistance
In what way do parasitoids differ from predators?
A. Parasitoids live within one host their whole lives, and predators always lives externally to prey
B. Parasitoids live on or within their hosts while immatures and predators are free living
C. Parasitoids and polyphagous during their larval stages and predators are oligophagous - Correct
Answer -Parasitoids live on or within their hosts while immatures and predators are free living
The cottony cushion scale by the vedalia beetle is an example of which type of ___ control? - Correct
Answer -Classical biological control
Know which insects undergo complete metamorphosis - Correct Answer -Beetles, bees, butterflies, ants,
moths, fleas, and mosquitos (complete metamorphosis is egg-larvae-pupa-adult)
Know which insects can reproduce asexually - Correct Answer -aphids and stick insects
Larvae of which pest penetrate into apples and pears, tunneling to the core and leaving holes with
reddish-brown, crumbly frass?
A. Codling moth
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, B. Gypsy moth
C. Clearwing moth - Correct Answer -Codling moth
The feeding damage and webbing on these apricots was mostly caused by:
A. Cucumber beetle
B. Orange tortix
C. European earwig - Correct Answer -Orange tortix
Asexual reproduction in the absence of male gametes is called
A. Parthenogenesis
B. Mogenesis
C. Ermiogenesis - Correct Answer -Parthenogenesis
Which of these arthropods has gradual metamorphosis
A. Termites
B. Fleas
C. Beetles - Correct Answer -Termites
During which stages are plants least able to compensate for injury caused by insect pests?
2|Page
2026|2027 updates) Already Graded A+| Pest Identification,
Biological Control, IPM, Life Cycles, Damage & Resistance
In what way do parasitoids differ from predators?
A. Parasitoids live within one host their whole lives, and predators always lives externally to prey
B. Parasitoids live on or within their hosts while immatures and predators are free living
C. Parasitoids and polyphagous during their larval stages and predators are oligophagous - Correct
Answer -Parasitoids live on or within their hosts while immatures and predators are free living
The cottony cushion scale by the vedalia beetle is an example of which type of ___ control? - Correct
Answer -Classical biological control
Know which insects undergo complete metamorphosis - Correct Answer -Beetles, bees, butterflies, ants,
moths, fleas, and mosquitos (complete metamorphosis is egg-larvae-pupa-adult)
Know which insects can reproduce asexually - Correct Answer -aphids and stick insects
Larvae of which pest penetrate into apples and pears, tunneling to the core and leaving holes with
reddish-brown, crumbly frass?
A. Codling moth
1|Page
, B. Gypsy moth
C. Clearwing moth - Correct Answer -Codling moth
The feeding damage and webbing on these apricots was mostly caused by:
A. Cucumber beetle
B. Orange tortix
C. European earwig - Correct Answer -Orange tortix
Asexual reproduction in the absence of male gametes is called
A. Parthenogenesis
B. Mogenesis
C. Ermiogenesis - Correct Answer -Parthenogenesis
Which of these arthropods has gradual metamorphosis
A. Termites
B. Fleas
C. Beetles - Correct Answer -Termites
During which stages are plants least able to compensate for injury caused by insect pests?
2|Page
