Chapter 33

Question 1

What are the two phylums discussed in this chapter?

Answer 1

Arthropoda

Echinodermata

Question 2

What are the five classes within the phylum Arthropoda? What animals are in each?

Answer 2

Crustacean
Chilopoda
Diplopoda
Insecta
Arachnida

Question 3

What are the 9 orders within the class insecta?

Answer 3

Coleoptera
Anopleura
Diptera
Ephemeroptera
Hemiptera
Hymenoptera
Lepidoptera
Odonata
Orthoptera

Question 4

What are some characteristics of the phylum arthropoda?

Answer 4

Open circulatory system
Bilateral symmetry
Jointed legs
Segmented body
Exoskeleton made of chitin

Question 5

What are some characteristics of the phylum Echinodermata?

Answer 5

Radial symmetry
Water vascular system
Skin gills

Question 6

What are some characteristics of the class Crustacean? Examples?

Answer 6

Three pairs of feeding appendages
Marine

Examples: shrimp, lobster, crayfish

Question 7

What are some characteristics of the class Chilopoda? Examples?

Answer 7

One pair of legs per segment

Examples: centipedes

Question 8

What are some characteristics of the class Diplopoda? Examples?

Answer 8

Two pairs of legs per segment

Examples: millipedes

Question 9

What are some characteristics of the class insecta? Examples?

Answer 9

9 orders
Six legs!
Limitations to water for reproduction

Examples: bugs, beetles

Question 10

What are some characteristics of the class Arachnida? Examples?

Answer 10

Two appendages for feeding
Pedipalps used for touching and mating in male spiders
Book lungs

Examples: spiders, ticks, spinneretes

Question 11

Example of the order Coleoptera?

Answer 11

Beetles

Question 12

Example of the order Anopleura?

Answer 12

Lice

Question 13

Example of the order Diptera?

Answer 13

Flies

Question 14

Example of the order Ephemeroptera?

Answer 14

Mayflies

Question 15

Example of the order Hemiptera?

Answer 15

Bugs

Question 16

Example of the order Hymenoptera?

Answer 16

Bees, wasps, ants

Question 17

Example of the order Lepidoptera?

Answer 17

Butterflies, moths

Question 18

Example of the order Odonata?

Answer 18

Dragonflies, damselflies

Question 19

Example of the order Orthoptera?

Answer 19

Grasshopper, cockroach

Question 20

List four reasons why the insects are so successful.

Answer 20

1. Only invertabae that can fly
2. Reproduce quick, live shirt lives
3. Small which means they can fit in any environment
4. Wide diversity of 10 million species which gives feeding and reproductive advantages

Question 21

List the five basic structural features of Arthropods.

Answer 21

1. Chitinous exoskeleton
2. Molting (shedding), doesn’t grow
3. Head, thorax, abdomen (3 basic structures)
4. Bilateral symmetry
5. Open circulatory system
6. (If needed) well developed nervous system

Question 22

What is incomplete metamorphosis?

Answer 22

Eggs -> nymph -> adult

Question 23

What is complete metamorphosis? What is the advantage to four life cycles?

Answer 23

Egg -> larva -> pupa-> adult

Advantage is you can pass winter and hatch at the start of summer so you’re ready to go and not still going trough the stages