ENTO 2993 EXAM 2 QUESTIONS
WITH COMPLETE SOLUTIONS
What three orders have scales - Answer- lepidoptera
tricoptera
diptera
Epicuticle+exocuticle+edicuticle - Answer- cuticle
Why is foregut lined by cuticle - Answer- for chewing and digestion
Why is hindgut lined by cuticle - Answer- water conservation
Why do immature insects molt - Answer- to grow
Located far from point of attachment - Answer- distal
Upper lip - Answer- labrum
Lower lip - Answer- labium
Tongue-like structure for mixing food and saliva - Answer- hypopharynx
first pair of jaws - Answer- mandibles
second pair of jaws - Answer- maxilla
ventrally directed mouthparts - Answer- hypognathus (grasshopper)
anteriorly directed mouthparts - Answer- prognathus (grasshopper)
posteriorly directed mouthparts - Answer- opisthognathus (grasshopper)
functions of labium - Answer- grab food
form mouth cavity
basic functional unit of compound eye - Answer- ommatidium
three things ommatidium is good at distinguishing - Answer- detect color, brightness,
and movement
A device that converts energy from one form to another - Answer- transducer
, lack of compound eyes - Answer- Entognatha
have compound eyes - Answer- Ectognatha
insect simple eyes - Answer- ocelli
2 functions of ocelli - Answer- gps/ compass
stabilization of flight
three parts of antennea - Answer- scape
filiform
pedistol
forward-facing mouthparts + give example - Answer- Prognathous (weevil)
downward-facing mouthparts + give example - Answer- Hypognathous (grasshopper)
backward-facing mouthparts + give example - Answer- Opisthognathus (stink bug)
what is the main message of the color-coded slide of the 33 hexapoda orders? -
Answer- metamorphosis is important for observational processes
do not and have never had wings - Answer- primitively wingless
have wings but don't use them - Answer- secondarily wingless (fleas)
leathery wings (technical name) - Answer- tegmen (cockroaches)
Hardened forwing (technical name) - Answer- Elytron (beetle)
thin and transparent wings (technical name) - Answer- Membranous (trueflies)
modified setae that make wings colorful (technical name) - Answer- scales (butterfly)
2/3rds hardened wing; distal portion membranous (technical name) - Answer-
Hemelytron (true bugs)
name 3 orders that have scales on their wings - Answer- Diptera
Tricoptera
Lepidoptera
know and be able to label the parts of the insect legs - Answer- claw; arolium; aroliar
pad;
adhesive systems of insects - Answer- pulvilli
WITH COMPLETE SOLUTIONS
What three orders have scales - Answer- lepidoptera
tricoptera
diptera
Epicuticle+exocuticle+edicuticle - Answer- cuticle
Why is foregut lined by cuticle - Answer- for chewing and digestion
Why is hindgut lined by cuticle - Answer- water conservation
Why do immature insects molt - Answer- to grow
Located far from point of attachment - Answer- distal
Upper lip - Answer- labrum
Lower lip - Answer- labium
Tongue-like structure for mixing food and saliva - Answer- hypopharynx
first pair of jaws - Answer- mandibles
second pair of jaws - Answer- maxilla
ventrally directed mouthparts - Answer- hypognathus (grasshopper)
anteriorly directed mouthparts - Answer- prognathus (grasshopper)
posteriorly directed mouthparts - Answer- opisthognathus (grasshopper)
functions of labium - Answer- grab food
form mouth cavity
basic functional unit of compound eye - Answer- ommatidium
three things ommatidium is good at distinguishing - Answer- detect color, brightness,
and movement
A device that converts energy from one form to another - Answer- transducer
, lack of compound eyes - Answer- Entognatha
have compound eyes - Answer- Ectognatha
insect simple eyes - Answer- ocelli
2 functions of ocelli - Answer- gps/ compass
stabilization of flight
three parts of antennea - Answer- scape
filiform
pedistol
forward-facing mouthparts + give example - Answer- Prognathous (weevil)
downward-facing mouthparts + give example - Answer- Hypognathous (grasshopper)
backward-facing mouthparts + give example - Answer- Opisthognathus (stink bug)
what is the main message of the color-coded slide of the 33 hexapoda orders? -
Answer- metamorphosis is important for observational processes
do not and have never had wings - Answer- primitively wingless
have wings but don't use them - Answer- secondarily wingless (fleas)
leathery wings (technical name) - Answer- tegmen (cockroaches)
Hardened forwing (technical name) - Answer- Elytron (beetle)
thin and transparent wings (technical name) - Answer- Membranous (trueflies)
modified setae that make wings colorful (technical name) - Answer- scales (butterfly)
2/3rds hardened wing; distal portion membranous (technical name) - Answer-
Hemelytron (true bugs)
name 3 orders that have scales on their wings - Answer- Diptera
Tricoptera
Lepidoptera
know and be able to label the parts of the insect legs - Answer- claw; arolium; aroliar
pad;
adhesive systems of insects - Answer- pulvilli
