Chapter 36 - Arthropods

Question 1

What are the 3 layers of the chitin?

Answer 1

Waxy outer layer
Middle layer
Inner layer

Question 2

What is an exoskeleton called?

Answer 2

Chitin

Question 3

What is the concentration of organs at the anterior end of the body called?

Answer 3

Cephalization

Question 4

List the five parts of cephalization

Answer 4

Appendages around mouth, antennae, compound eyes, ventral nerve cord, ganglia

Question 5

How is molting triggered?

Answer 5

Tissues swell, pressure build in exoskeleton and hormones are produced to start molting

Question 6

What is the common ancestor of Arthropods?

Answer 6

Trilobite

Question 7

What are segments that are fused into larger structures?

Answer 7

Tegmata

Question 8

List 4 classes of Arthropods

Answer 8

Trilobita, Crustacea, chelicerata, uniramia

Question 9

Which class consists of branched antennae and chewing mouth parts called mandibles?

Answer 9

Crustacea

Question 10

Which class consists of the absence of antennae and pincer like mouthparts?

Answer 10

Chelicerata

Question 11

Which class consists of appendages that are unbranched?

Answer 11

Uniramia

Question 12

List four common animals that are Crustacea

Answer 12

Crayfish, lobsters, crabs, barnacles

Question 13

What are appendages used to filter food out of the water called?

Answer 13

Cirri

Question 14

What is the larval form of crustaceans called?

Answer 14

Nauplius

Question 15

What is called when the head and thorax are fused?

Answer 15

Cephalothorax

Question 16

What is a flat triangular section on tail?

Answer 16

Telson

Question 17

What removes wastes from blood and removes excess water?

Answer 17

Green gland

Question 18

What detect position changes?

Answer 18

Statocysts

Question 19

List most common members of the class Arachnida

Answer 19

Spiders, scorpions, ticks, mites

Question 20

List 5 different categories that spiders fall into

Answer 20

Orb weavers, con web weavers, sheet weavers, jumping spiders, trap door spiders

Question 21

List 2 poisonous spiders in the US

Answer 21

Black widow, brown recluse

Question 22

What are the web secreting glands called?

Answer 22

Spinnerets

Question 23

What removes wastes in an arachnid?

Answer 23

Coxal gland

Question 24

In what two ways do spiders differ from scorpions

Answer 24

Pedipalps are modified pincers, large stinger on tail

Question 25

What is the arachnid “many feet” called?

Answer 25

Myropod

Question 26

Describe the me characteristics of Arthropods

Answer 26

Jointed appendages, segmented body, exoskeleton, central nervous system