PCA Exam: Insects, Mites, and
Invertebrates Exam Comprehensive (Latest
) Questions & Answers 100%
Correct {Grade A}
What is the function of the juvenile hormone - correct answer to inhibit the
development of adult characteristics causing the insect to remain as a nymph or
larvae until the final stage of development when the hormone is no longer produced
What does without metamorphosis mean - correct answer does not have multiple
instars that are different from one another only changes in size from hatch (spring
tails, silverfish, and lice)
What does with gradual/incomplete metamorphosis mean - correct answer gradual
changes occurring to the insect during development from egg to adult
(grasshoppers/crickets)
,What does with complete metamorphosis mean - correct answer radical changes to
an insect between life stages such as size, physical appearance, or mouthparts larvae-
-> pupa--> adult--> egg (lacewings, beatles, wasps, bees and fleas)
Aestivation - correct answer a state of animal dormancy, similar to hibernation,
characterized by inactivity and a lowered metabolic rate, that is entered in response to
high temperatures and arid conditions.
Diapause - correct answer A resting state that insects enter to avoid inhospitable
environmental conditions.
Allomones - correct answer chemical defenses found within insects to make them
distasteful, damaging, or toxic to other animals
Degree-days - correct answer the measurement of heat units over time, calculated
from daily maximum and minimums, often used to track the development of insect
species
,Instars - correct answer a stage in the life of an insect between two successive molts
for an individual in a species instar
Invertebrates biofix date - correct answer the date that the begin of accumulation of
degree days
Pheromones - correct answer chemical substance produced and released into the
environment by an insect that affecting the behavior or physiology of others of it
species
Semiochemicals - correct answer A pheromone or other chemical that conveys a
signal from one organism to another so as to modify the behavior of the receipt
organism
What insects use degree day models in management programs - correct answer red
scale, leafrollers, fruit moths, peach twig borer, lygus bug, navel orangeworm
, How are pheromones used in IPM programs - correct answer To disrupt mating and
attract males to a trap to monitor population sizes
Polyphagous - correct answer able to feed on various kinds of food, very damaging in
agriculture (armyworm, cotton bollworm)
Monophagous - correct answer feed on one or two closely related host species
(vedalia beetle)
What are some dispersal methods used by insects - correct answer walking, flying,
water movement, host movement, wind movement
what are some ways insects overwinter - correct answer egg, larvae, and adult
Density dependent - correct answer limiting factor that affects the population
regardless of size (fire/floods/drought)
Invertebrates Exam Comprehensive (Latest
) Questions & Answers 100%
Correct {Grade A}
What is the function of the juvenile hormone - correct answer to inhibit the
development of adult characteristics causing the insect to remain as a nymph or
larvae until the final stage of development when the hormone is no longer produced
What does without metamorphosis mean - correct answer does not have multiple
instars that are different from one another only changes in size from hatch (spring
tails, silverfish, and lice)
What does with gradual/incomplete metamorphosis mean - correct answer gradual
changes occurring to the insect during development from egg to adult
(grasshoppers/crickets)
,What does with complete metamorphosis mean - correct answer radical changes to
an insect between life stages such as size, physical appearance, or mouthparts larvae-
-> pupa--> adult--> egg (lacewings, beatles, wasps, bees and fleas)
Aestivation - correct answer a state of animal dormancy, similar to hibernation,
characterized by inactivity and a lowered metabolic rate, that is entered in response to
high temperatures and arid conditions.
Diapause - correct answer A resting state that insects enter to avoid inhospitable
environmental conditions.
Allomones - correct answer chemical defenses found within insects to make them
distasteful, damaging, or toxic to other animals
Degree-days - correct answer the measurement of heat units over time, calculated
from daily maximum and minimums, often used to track the development of insect
species
,Instars - correct answer a stage in the life of an insect between two successive molts
for an individual in a species instar
Invertebrates biofix date - correct answer the date that the begin of accumulation of
degree days
Pheromones - correct answer chemical substance produced and released into the
environment by an insect that affecting the behavior or physiology of others of it
species
Semiochemicals - correct answer A pheromone or other chemical that conveys a
signal from one organism to another so as to modify the behavior of the receipt
organism
What insects use degree day models in management programs - correct answer red
scale, leafrollers, fruit moths, peach twig borer, lygus bug, navel orangeworm
, How are pheromones used in IPM programs - correct answer To disrupt mating and
attract males to a trap to monitor population sizes
Polyphagous - correct answer able to feed on various kinds of food, very damaging in
agriculture (armyworm, cotton bollworm)
Monophagous - correct answer feed on one or two closely related host species
(vedalia beetle)
What are some dispersal methods used by insects - correct answer walking, flying,
water movement, host movement, wind movement
what are some ways insects overwinter - correct answer egg, larvae, and adult
Density dependent - correct answer limiting factor that affects the population
regardless of size (fire/floods/drought)
