PCA EXAM: INSECTS, MITES, AND
INVERTEBRATES (ACTUAL EXAM 2026)
LATEST
UPDATE WITH 100% VERIFIED QUESTIONS &
CORRECT ANSWERS GRADED A+
What is the function of the ecdysone hormone a
steroid hormone that stimulates metamorphosis and
regulates molting
What is the function of the juvenile hormone 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
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
gradual changes occurring to the insect during development
from egg to adult (grasshoppers/crickets)
What does with complete metamorphosis mean 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)
Describe the most common reproductive process in insects
Sexual reproduction starts with the fertilization of a viable egg
with sperm that is passed through the oviduct of a female
What is parthenogenesis the reproduction of an ovum
without fertilization, especially as a normal process in some
invertebrates and lower plants. Aphids, stick insects, water
fleas, and nematodes all use this process
What are the key functions of an exoskeleton protection
and support
,Describe the molting process
The shedding of one exoskeleton and replacing it with a larger
one allowing for further growth
Apolysis
Separation of old cuticle from epidermis
Ecdysis periodic shedding of the cuticle in arthropods or the
outer skin in reptiles
Chewing Mouthpart includes the labrum, mandibles,
hypopharynx, and the labrum-epipharynx
Describe an insects circulatory system
Insects operate with an open circulatory system that means the
hemolymph flows freely between muscle and body captivities,
this system is also responsible for moving hormones,
nutrients, salts and other metabolic wastes. The system is
made up of three parts the dorsal vessel, and an aorta.
, Describe an insects nervous system an insects nervous
system is responsible for receiving and integrating
information from the environment and translating that
information into a series of reactions
What is a reflex action
an action that is created purely from stimulus, no brain
activity is responsible for it
Aestivation 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.
INVERTEBRATES (ACTUAL EXAM 2026)
LATEST
UPDATE WITH 100% VERIFIED QUESTIONS &
CORRECT ANSWERS GRADED A+
What is the function of the ecdysone hormone a
steroid hormone that stimulates metamorphosis and
regulates molting
What is the function of the juvenile hormone 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
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
gradual changes occurring to the insect during development
from egg to adult (grasshoppers/crickets)
What does with complete metamorphosis mean 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)
Describe the most common reproductive process in insects
Sexual reproduction starts with the fertilization of a viable egg
with sperm that is passed through the oviduct of a female
What is parthenogenesis the reproduction of an ovum
without fertilization, especially as a normal process in some
invertebrates and lower plants. Aphids, stick insects, water
fleas, and nematodes all use this process
What are the key functions of an exoskeleton protection
and support
,Describe the molting process
The shedding of one exoskeleton and replacing it with a larger
one allowing for further growth
Apolysis
Separation of old cuticle from epidermis
Ecdysis periodic shedding of the cuticle in arthropods or the
outer skin in reptiles
Chewing Mouthpart includes the labrum, mandibles,
hypopharynx, and the labrum-epipharynx
Describe an insects circulatory system
Insects operate with an open circulatory system that means the
hemolymph flows freely between muscle and body captivities,
this system is also responsible for moving hormones,
nutrients, salts and other metabolic wastes. The system is
made up of three parts the dorsal vessel, and an aorta.
, Describe an insects nervous system an insects nervous
system is responsible for receiving and integrating
information from the environment and translating that
information into a series of reactions
What is a reflex action
an action that is created purely from stimulus, no brain
activity is responsible for it
Aestivation 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.
