What is an Insect?

Question 1

morphologically

Answer 1

words, suffixes, species names and how they relate

Question 2

phylogenetically

Answer 2

the evolutionary history and development of insects

Question 3

unsegmented

Answer 3

whole, not segmented body parts (humans)

Question 4

what are the major regions of an insect?

Answer 4

head, thorax, abdomen

Question 5

what are the basic characteristic of an insect?

Answer 5

a segmented body, the three major regions, an exoskeleton, compound eyes, pairs of appendages

Question 6

what is the modern definition of an insect?

Answer 6

if it has an exoskeleton, tagma, and hexapods

Question 7

hexapods

Answer 7

six legs made up of the fusion of ancestral segments by jointed appendages

Question 8

tagma

Answer 8

the three major body regions

Question 9

ocellus

Answer 9

simple eye

Question 10

labium

Answer 10

lower lip

Question 11

clypeus, labrum

Answer 11

upper lip

Question 12

mandible

Answer 12

upper jaw

Question 13

maxilla

Answer 13

lower jaw

Question 14

what is are antennae used for?

Answer 14

smell

Question 15

what are the two types of eyes on an insect?

Answer 15

compound and simple eye

Question 16

what is the first thoracic segment?

Answer 16

the foreleg

Question 17

what is the second thoracic segment?

Answer 17

the forewing and midleg

Question 18

what is the third thoracic segment?

Answer 18

the hindwing and hindleg

Question 19

how do you tell the difference between a male and female insect?

Answer 19

The female’s abdomen is larger, more protected and is pointed at the end. The male’s abdomen is smaller and consists of two genitalia parts, one being pointed

Question 20

what are some major internal systems of an insect?

Answer 20

nervous, digestive, circulatory, excretory systems and musculature

Question 21

hemolymph

Answer 21

insect “blood”

Question 22

how is hemolymph used?

Answer 22

it is not part of respiration, used in hormone transport (signaling), immune response, and excretion

Question 23

what are some characteristics of the circulatory system?

Answer 23

an open, nonpressurized system suffusing blood through the body. can be exposed to the environment, and pumped by the heart

Question 24

hemocoel

Answer 24

the primary body cavity of an insect, suffused by hemolymph

Question 25

suffusion

Answer 25

blood gradually spreading through a body

Question 26

thermoregulation in bees

Answer 26

the thorax of an insect is typically warmer, then colder in the abdomen

Question 27

what are the three main components of the respiratory system?

Answer 27

spiracles, trachea, and tracheoles

Question 28

spiracles

Answer 28

openings in the exoskeleton

Question 29

trachea

Answer 29

connecting spiracles to tracheoles

Question 30

tracheoles

Answer 30

thin tubes, sometimes filled with fluid

Question 31

how do wings move?

Answer 31

they operate by the alternating contraction of dorsal-ventral muscles and dorsal longitudinal muscles, therefore moving the sternal and dorsal sclera connected to the wings