PCA INSECTS EXAM SCRIPT 2026
QUESTIONS WITH 100% CORRECT
ANSWERS
⩥ How do piercing sucking mouthparts differ from other types of
mouthparts? Answer: mandible and maxillae are modified into stylets
⩥ Which type of insect is most often killed when it feeds on plants
treated with pesticides? Answer: leafhoppers
⩥ White flies are one of the primary targets for which of these natural
enemies? Answer: Encarsia formosa
⩥ Hyposoter spp. are parasites of dozens of different types of? Answer:
caterpillars
⩥ Transgenic plants for control of arthropod pests have been developed?
Answer: Bacillus thuringiensis
⩥ As originally devised, the main objective of the sterile insect
technique is? Answer: eradication
, ⩥ Which statement describes an invasive species? Answer: a non-native
species that is likely to cause harm
⩥ Which insect mortality factor is sometimes density-dependent?
Answer: action of natural enemies
⩥ Which of these insects is an example of a predator? Answer:
ichneumon wasp
⩥ Most adult slugs and snails feed on which of these? Answer: both
living and dead plant matter
⩥ Which of these outcomes can be reduced by harvesting alfalfa hay a
few days early? Answer: presence of virus vectoring aphids
⩥ Stippling is most common with insects that have? Answer: piercing
sucking mouthparts
⩥ An insects exoskeleton protects it against? Answer: desiccation
⩥ The body regions of a spider include the? Answer: abdomen and
cephalothorax
QUESTIONS WITH 100% CORRECT
ANSWERS
⩥ How do piercing sucking mouthparts differ from other types of
mouthparts? Answer: mandible and maxillae are modified into stylets
⩥ Which type of insect is most often killed when it feeds on plants
treated with pesticides? Answer: leafhoppers
⩥ White flies are one of the primary targets for which of these natural
enemies? Answer: Encarsia formosa
⩥ Hyposoter spp. are parasites of dozens of different types of? Answer:
caterpillars
⩥ Transgenic plants for control of arthropod pests have been developed?
Answer: Bacillus thuringiensis
⩥ As originally devised, the main objective of the sterile insect
technique is? Answer: eradication
, ⩥ Which statement describes an invasive species? Answer: a non-native
species that is likely to cause harm
⩥ Which insect mortality factor is sometimes density-dependent?
Answer: action of natural enemies
⩥ Which of these insects is an example of a predator? Answer:
ichneumon wasp
⩥ Most adult slugs and snails feed on which of these? Answer: both
living and dead plant matter
⩥ Which of these outcomes can be reduced by harvesting alfalfa hay a
few days early? Answer: presence of virus vectoring aphids
⩥ Stippling is most common with insects that have? Answer: piercing
sucking mouthparts
⩥ An insects exoskeleton protects it against? Answer: desiccation
⩥ The body regions of a spider include the? Answer: abdomen and
cephalothorax
