1
ENT 201 Exam 2: NCSU: Sorenson 2025
update|comprehensive questions and
verified answers (complete solutions)
Exam|GRADE A+!!
what stage do all insects start in? - (ANSWER)egg
no metamorphosis - (ANSWER)ametabolous
what type of bugs never have any wings? - (ANSWER)ametabolous
name the stages of ametabolous insects - (ANSWER)egg young adult
simple metamorphosis - (ANSWER)hemimetabolous
name the stages of hemimetabolous bugs - (ANSWER)egg nymph adult
which type of bugs have only adults that are winged and sexed -
(ANSWER)hemimetabolous
what are the fuel for insect muscles? - (ANSWER)carbs, lipids, oxygen
, 2
insects often have _________ muscles to "open" and "close" -
(ANSWER)opposing
muscles may be one-sided with __________ opposing - (ANSWER)resilin
what type of joints will insects occassionally have? - (ANSWER)ball and socket
unmuscled outgrowths of the meso and metathorax - (ANSWER)wings
lift comes from the __________ and ___________ of the wing - (ANSWER)twist
and shape
the exchange of information that occurs when the behavior of one organsim (the
sender) alters the behavior of another organism (the receiver) -
(ANSWER)communication
continuation of the species, location of food, sound the alarm of defense, division
of labor, recognition of mates, aggregation - (ANSWER)reasons for
communication
file and scraper sound production - (ANSWER)stridulation
how do cicadas make noise? - (ANSWER)tymbals
, 3
chemical produced by one species and detected by a different species. Benefits
the sender and harms the reciever - (ANSWER)allomone
chemical produced by one species and detected by a different species. Benefits
the receiver at the expense of the sender - (ANSWER)kairomone
chemical produced by one species and detected by other members of the same
species. Usually benefits both the sender and receiver - (ANSWER)pheromone
sex attractants, alarm, dispersal, aggregation, caste determining, marker, trail
marking - (ANSWER)types of pheromones
what are the 3 practical uses of pheromones? - (ANSWER)monitoring and
detection, population control, mating disruption
insects with no parental care, no cooperation across generations, may have
aggregations for mating, eating, migration, etc. --- most insects -
(ANSWER)solitary
insects with some parental care of immatures - (ANSWER)subsocial
insects that share a nest but have no parental care of immatures -
(ANSWER)communal
ENT 201 Exam 2: NCSU: Sorenson 2025
update|comprehensive questions and
verified answers (complete solutions)
Exam|GRADE A+!!
what stage do all insects start in? - (ANSWER)egg
no metamorphosis - (ANSWER)ametabolous
what type of bugs never have any wings? - (ANSWER)ametabolous
name the stages of ametabolous insects - (ANSWER)egg young adult
simple metamorphosis - (ANSWER)hemimetabolous
name the stages of hemimetabolous bugs - (ANSWER)egg nymph adult
which type of bugs have only adults that are winged and sexed -
(ANSWER)hemimetabolous
what are the fuel for insect muscles? - (ANSWER)carbs, lipids, oxygen
, 2
insects often have _________ muscles to "open" and "close" -
(ANSWER)opposing
muscles may be one-sided with __________ opposing - (ANSWER)resilin
what type of joints will insects occassionally have? - (ANSWER)ball and socket
unmuscled outgrowths of the meso and metathorax - (ANSWER)wings
lift comes from the __________ and ___________ of the wing - (ANSWER)twist
and shape
the exchange of information that occurs when the behavior of one organsim (the
sender) alters the behavior of another organism (the receiver) -
(ANSWER)communication
continuation of the species, location of food, sound the alarm of defense, division
of labor, recognition of mates, aggregation - (ANSWER)reasons for
communication
file and scraper sound production - (ANSWER)stridulation
how do cicadas make noise? - (ANSWER)tymbals
, 3
chemical produced by one species and detected by a different species. Benefits
the sender and harms the reciever - (ANSWER)allomone
chemical produced by one species and detected by a different species. Benefits
the receiver at the expense of the sender - (ANSWER)kairomone
chemical produced by one species and detected by other members of the same
species. Usually benefits both the sender and receiver - (ANSWER)pheromone
sex attractants, alarm, dispersal, aggregation, caste determining, marker, trail
marking - (ANSWER)types of pheromones
what are the 3 practical uses of pheromones? - (ANSWER)monitoring and
detection, population control, mating disruption
insects with no parental care, no cooperation across generations, may have
aggregations for mating, eating, migration, etc. --- most insects -
(ANSWER)solitary
insects with some parental care of immatures - (ANSWER)subsocial
insects that share a nest but have no parental care of immatures -
(ANSWER)communal
