ENTO 2993 FINAL EXAM PREP
QUESTIONS WITH CORRECT
ANSWERS
The ability of an organism to keep its body temperature within certain boundaries, even
when the surrounding temperature is very different - Answer- Define Thermoregulation
-Basking
-Stilting
-Seeking Shade (Burrowing)
-Bees in cold weather - moving around and beating wings inside their hives
-Bees in hot weather - beating wings at the entrance to the hive
- congregating - Answer- Name and describe 6 behavioral ways that insects
thermoregulate
-Countercurrent heat exchanger in bees
-Narrow waist (petiole)
-Flow of hemolymph anteriorly
-abdomen acts as a radiator
-hairs on body, especially the thorax - Answer- Name and describe 5 structural ways
that insects thermoregulate
Torpor-2 types:
- Hibernation - production of large amounts of gycols (glycerol=antifreeze)
- Aestivation - production of large amounts of saturated fatty acid - Answer- Name and
describe 2 physiological ways that insects thermoregulate
thermoregulation that involves escape in time and thermoregulation that involves
escape in space
- escape in time - pupation or hibernation during tough times; Does not involve change
in location
- escape in space - immediate flight and migration: involves change of location -
Answer- Name and describe 2 ways that insects "escape" extremely harsh temperature
conditions?
Thermoregulation especially keeping the thorax warm when ambient temperature is low.
thermoregulation involving facilitating the warming up of the thorax and maintaining the
thorax warm when need be - Answer- What is the function of the countercurrent heat
exchanger in honey bees?
1) the very narrow petiole (waist)
, 2) the 9 loops which
a) slow blood flow
b) increase surface area for heat exchange
c) prevent blood from flowing in spurts
3) posterior-anterior flow of blood in the aorta
4) posterior directed flow of blood back to the abdomen - Answer- Name 4 ways by
which the 9 loops of the countercurrent heat exchanger conserve heat in the thorax
Abdomen and wings - Answer- Which regions or parts of the insect act as radiators?
1) Johnston's organ
2) Tympanum or tympanic organs (tympanic membrane) - Answer- Give 2 examples of
chordotonal organs
Infrasound - Answer- Sound frequencies less than 20 Hz are called
Trichogen Cell - Answer- A cell that secretes the seta (hair) in trichoform sensillum
Provides an insect with cues about the position and orientation of its body or
appendages (provides it with self awareness info) - Answer- What is the function of a
proprioceptor?
Ultrasound (when used for range finding it is called echolocation) - Answer- Sound
frequencies greater than 20000 Hz are called
1) stridulation
2) vibrating body parts
3) tapping or hitting a body part against a surface
4) forcing air through spiracles - Answer- Name 4 different types of sound production in
insect
Ephemeroptera - external lateral abdominal gills
Odonata (Damselfly) - 3 external terminal abdominal gills
Odonata (Dragonfly) - Internal abdominal rectal gills
Plecoptera - external thoracic gills - Answer- State the differences among
Ephemeroptera, Odonata (dragon and damsel), and Plecoptera naiads based on gill
location
Courtship - Answer- What is the term given to specialized animals behavior that leads to
or initiates mating
Lek behavior - Answer- social behavior related to competition or fighting in sites with no
valuable resources
territorial behavior - Answer- Social behavior related to competition or fighting in sites
with valuable resources
QUESTIONS WITH CORRECT
ANSWERS
The ability of an organism to keep its body temperature within certain boundaries, even
when the surrounding temperature is very different - Answer- Define Thermoregulation
-Basking
-Stilting
-Seeking Shade (Burrowing)
-Bees in cold weather - moving around and beating wings inside their hives
-Bees in hot weather - beating wings at the entrance to the hive
- congregating - Answer- Name and describe 6 behavioral ways that insects
thermoregulate
-Countercurrent heat exchanger in bees
-Narrow waist (petiole)
-Flow of hemolymph anteriorly
-abdomen acts as a radiator
-hairs on body, especially the thorax - Answer- Name and describe 5 structural ways
that insects thermoregulate
Torpor-2 types:
- Hibernation - production of large amounts of gycols (glycerol=antifreeze)
- Aestivation - production of large amounts of saturated fatty acid - Answer- Name and
describe 2 physiological ways that insects thermoregulate
thermoregulation that involves escape in time and thermoregulation that involves
escape in space
- escape in time - pupation or hibernation during tough times; Does not involve change
in location
- escape in space - immediate flight and migration: involves change of location -
Answer- Name and describe 2 ways that insects "escape" extremely harsh temperature
conditions?
Thermoregulation especially keeping the thorax warm when ambient temperature is low.
thermoregulation involving facilitating the warming up of the thorax and maintaining the
thorax warm when need be - Answer- What is the function of the countercurrent heat
exchanger in honey bees?
1) the very narrow petiole (waist)
, 2) the 9 loops which
a) slow blood flow
b) increase surface area for heat exchange
c) prevent blood from flowing in spurts
3) posterior-anterior flow of blood in the aorta
4) posterior directed flow of blood back to the abdomen - Answer- Name 4 ways by
which the 9 loops of the countercurrent heat exchanger conserve heat in the thorax
Abdomen and wings - Answer- Which regions or parts of the insect act as radiators?
1) Johnston's organ
2) Tympanum or tympanic organs (tympanic membrane) - Answer- Give 2 examples of
chordotonal organs
Infrasound - Answer- Sound frequencies less than 20 Hz are called
Trichogen Cell - Answer- A cell that secretes the seta (hair) in trichoform sensillum
Provides an insect with cues about the position and orientation of its body or
appendages (provides it with self awareness info) - Answer- What is the function of a
proprioceptor?
Ultrasound (when used for range finding it is called echolocation) - Answer- Sound
frequencies greater than 20000 Hz are called
1) stridulation
2) vibrating body parts
3) tapping or hitting a body part against a surface
4) forcing air through spiracles - Answer- Name 4 different types of sound production in
insect
Ephemeroptera - external lateral abdominal gills
Odonata (Damselfly) - 3 external terminal abdominal gills
Odonata (Dragonfly) - Internal abdominal rectal gills
Plecoptera - external thoracic gills - Answer- State the differences among
Ephemeroptera, Odonata (dragon and damsel), and Plecoptera naiads based on gill
location
Courtship - Answer- What is the term given to specialized animals behavior that leads to
or initiates mating
Lek behavior - Answer- social behavior related to competition or fighting in sites with no
valuable resources
territorial behavior - Answer- Social behavior related to competition or fighting in sites
with valuable resources
