Ch. 28 Biology

Front 1

have a segmented body, a tough exoskeleton, and jointed appendages

Back 1

arthropods

Front 2

a tough external covering, like a suit of armor that protects and supports the body

Back 2

exoskeleton

Front 3

exoskeleton made from protein and a carbohydrate called

Back 3

chitin

Front 4

structures such as legs and antennae that extend form the body wall

Back 4

appendages

Front 5

the evolution of arthropods has led to - body segments and highly specialized appendages for feeding, movement, and other functions

Back 5

fewer

Front 6

most terrestrial arthropods breathe through a network of branching - - that extend throughout the body

Back 6

tracheal tubes

Front 7

air enters and leaves the tracheal tubes through

Back 7

spiracles

Front 8

organs that have layers of respiratory tissues stacked like the pages of a book

Back 8

Book lungs

Front 9

saclike organs that extract wastes from the blood and then add them to feces, or digestive wastes, that move through the gut

Back 9

Malphighian tubules

Front 10

when they outgrow their exoskeletons, arthropods undergo periods of -

Back 10

molting

Front 11

when an arthropod sheds its entire exoskeleton and manufactures a larger one to take its place

Back 11

molting

Front 12

arthropods are classified based on: ,

Back 12

number and structure of their body segments and appendages

Front 13

have 2 pairs od antennaem 2 or 3 body sections, and chewing mouthparts called mandibles

Back 13

crustaceans

Front 14

anterior - is formed by fusion of the head with the thorax

Back 14

cephalothroax

Front 15

lies just behind the head and houses most of the internal organs

Back 15

thorx

Front 16

the posterior part of the body

Back 16

abdomen

Front 17

the part of the exoskeleton that covers the cephalothorax

Back 17

carapace

Front 18

mouthpart adapted for biting and grinding food

Back 18

mandible

Front 19

bear large claws that are modified to catch, pick up, crush, and cut food

Back 19

chelipeds

Front 20

flipperlike appendages used for swimming

Back 20

swimmerettes

Front 21

flipperlike appendages used for swimming

Back 21

swimmerettes

Front 22

have mouthparts called chelicerae and two body sections, and nearly all have four pairs of walking legs

Back 22

chelicerates

Front 23

contains fangs and are used to stab and paralyze prey

Back 23

chelicerae

Front 24

longer than the chelicerae and are usually modified to grab prey

Back 24

pedipalps

Front 25

organs that contain silk glands

Back 25

spinnerets

Front 26

have jaws, one pair of antennae, and unbranched appendages

Back 26

uniramians

Front 27

have a body divided into three parts- head, thorax, and abdomen. three pairs of legs are attached to the thorax

Back 27

insects

Front 28

growth and development of insects usually involve - , which is a process of changing shape and form. insects undergo either incomplete -or complete -

Back 28

metamorphosis

Front 29

many insects, such as bees, undergo a more dramatic change in body form during

Back 29

complete metamorphosis

Front 30

stage in which an insect changes from larva to adult

Back 30

pupa

Front 31

specific chemical messengers that affect the behavior or development of other individuals of the same species

Back 31

pheromones

Front 32

ants, bees, termites, and some of their relatives form complex associations called -

Back 32

societies

Front 33

a group of closely related animals of the same species that work together for the benefit of hte whole group

Back 33

society