PCA EXAM; INSECT, MITES AND
INVERTEBRATES
NEWEST VERSION COMPLETE QUESTIONS
AND
CORRECT DETAILED ANSWERS 2026/2027
LATEST UPDATE
How are piercing-sucking mouthparts different than chewing mouthparts -
they have a modified labrum that acts as a pouch for protecting the maxillary
stylets and mandibles/maxillae that are sharpened like a needle
What are the main body parts of a adult insect - head thorax and abdomen
What are the main body parts of a adult spider - cephalothorax (head region)
abdomen, 8 legs
What are the main body parts of a adult mite - cephalothorax, abdomen, 6
pairs of appendages- 4 legs and 2 pairs of mouthparts appendage
What is the proper name for catepillar like body type -
What is the proper name for grublike like body type - scarabaeiform
1
,What is the proper name for maggotlike like body type - vermiform
Haltere wing type - a hindwing that is reduced to a knobbed guidance organ,
most commonly found in diptera family of true flies
Tegmina wing type - front wings that are completely leathery or parchment
like in texture, most common in grasshopper or crickets
Hemelytra wing type - Front wings that are leathery or parchment-like at the
base and membranous near the tip in some true bug species
Elytra wing type - Hard, sclerotized front wings that serve as protective
covers for membranous hind wings, most common in beetle like species
Scales wing type - Membranous wings that may be coated with scale to
provide color, protection from predators, and temperature regulation
Chewing Mouthpart - includes the labrum, mandibles, hypopharynx, and the
labrum-epipharynx
piercing-sucking mouthparts - insect mouthparts in which a syringe-like
structure pierces plant cells and draws in its contents
Blood Feeding Mouthparts - An elongated labium forms a protective sheath
for the stylet that carries enzymes that when the insect carries blood up it
does not clot
2
, rasping-sucking mouthparts - Scrape the surface of the leaf away and then
feed on the sap using a cone shaped beak
Siphoning mouthparts - Feeding tube is uncoiled and extended to suck liquids
into the mouth (butterfly)
Sponging mouthparts - The mandibles and maxillae are nonfunctional, and
the remaining parts form a proboscis with a fan-shaped sponge at the tip,
liquid food is mopped up by the capillary action
Chewing-lapping mouthparts - Modified mouthparts that occur in bees.
Includes a "tongue" that laps up liquids, as well as mandibles that can be used
for various functions.
What orders of insects have chewing mouthparts - Collembola, coleptera,
dermaptera, dictyoptera, diptera, ephemeroptera, hymenoptera, isoptera,
lepidoptera, mecoptera, neurtopera, odonata, orthoptera, plecoptera,
psocoptera, thysanura what insect orders have piercing-sucking
mouthparts - hemiptera, diptera, siphonaptera
What is the function of the foregut in an insect - Starts the breakdown of the
ingested food source
3
INVERTEBRATES
NEWEST VERSION COMPLETE QUESTIONS
AND
CORRECT DETAILED ANSWERS 2026/2027
LATEST UPDATE
How are piercing-sucking mouthparts different than chewing mouthparts -
they have a modified labrum that acts as a pouch for protecting the maxillary
stylets and mandibles/maxillae that are sharpened like a needle
What are the main body parts of a adult insect - head thorax and abdomen
What are the main body parts of a adult spider - cephalothorax (head region)
abdomen, 8 legs
What are the main body parts of a adult mite - cephalothorax, abdomen, 6
pairs of appendages- 4 legs and 2 pairs of mouthparts appendage
What is the proper name for catepillar like body type -
What is the proper name for grublike like body type - scarabaeiform
1
,What is the proper name for maggotlike like body type - vermiform
Haltere wing type - a hindwing that is reduced to a knobbed guidance organ,
most commonly found in diptera family of true flies
Tegmina wing type - front wings that are completely leathery or parchment
like in texture, most common in grasshopper or crickets
Hemelytra wing type - Front wings that are leathery or parchment-like at the
base and membranous near the tip in some true bug species
Elytra wing type - Hard, sclerotized front wings that serve as protective
covers for membranous hind wings, most common in beetle like species
Scales wing type - Membranous wings that may be coated with scale to
provide color, protection from predators, and temperature regulation
Chewing Mouthpart - includes the labrum, mandibles, hypopharynx, and the
labrum-epipharynx
piercing-sucking mouthparts - insect mouthparts in which a syringe-like
structure pierces plant cells and draws in its contents
Blood Feeding Mouthparts - An elongated labium forms a protective sheath
for the stylet that carries enzymes that when the insect carries blood up it
does not clot
2
, rasping-sucking mouthparts - Scrape the surface of the leaf away and then
feed on the sap using a cone shaped beak
Siphoning mouthparts - Feeding tube is uncoiled and extended to suck liquids
into the mouth (butterfly)
Sponging mouthparts - The mandibles and maxillae are nonfunctional, and
the remaining parts form a proboscis with a fan-shaped sponge at the tip,
liquid food is mopped up by the capillary action
Chewing-lapping mouthparts - Modified mouthparts that occur in bees.
Includes a "tongue" that laps up liquids, as well as mandibles that can be used
for various functions.
What orders of insects have chewing mouthparts - Collembola, coleptera,
dermaptera, dictyoptera, diptera, ephemeroptera, hymenoptera, isoptera,
lepidoptera, mecoptera, neurtopera, odonata, orthoptera, plecoptera,
psocoptera, thysanura what insect orders have piercing-sucking
mouthparts - hemiptera, diptera, siphonaptera
What is the function of the foregut in an insect - Starts the breakdown of the
ingested food source
3
