Phylum Annelida, Arthropoda, and Chordata

Question 1

What are the three subphyla of Phylum Chordata?

Answer 1

Urochordata, Cephalochordata, Vertebrata

Question 2

What is the common name for organisms in Subphylum Urochordata?

Answer 2

Tunicate or sea squirt

Question 3

What are the defining characteristics of lancelets?

Answer 3

Pharyngeal gill slits, notochord, dorsal nerve cord

Question 4

What is a key characteristic of Subphylum Vertebrata?

Answer 4

Possession of a vertebral column

Question 5

What are the common names for organisms in Class Myxini and Class Petromyzontida?

Answer 5

Hagfish (Myxini) and lamprey (Petromyzontida)

Question 6

What are common names for organisms in Class Chondrichthyes?

Answer 6

Sharks, skates, rays

Question 7

What type of skeleton do members of Class Chondrichthyes have?

Answer 7

Cartilaginous skeleton

Question 8

What is the common name for organisms in Class Actinopterygii?

Answer 8

Ray-finned bony fish

Question 9

What are the common names for organisms in Class Amphibia?

Answer 9

Frogs, toads, salamanders, newts

Question 10

What are common names for organisms in Class Reptilia?

Answer 10

Turtles, lizards, snakes, alligators

Question 11

What is the common name for organisms in Class Mammalia?

Answer 11

Mammals

Question 12

What are two defining characteristics of mammals?

Answer 12

Mammary glands and hair/fur

Question 13

What are the key characteristics of Phylum Arthropoda?

Answer 13

Segmented body, exoskeleton, jointed appendages

Question 14

What is the common name for organisms in Subphylum Trilobita?

Answer 14

Trilobite

Question 15

What are the two main classes in Subphylum Chelicerata?

Answer 15

Merostomata and Arachnida

Question 16

What is the common name for organisms in Class Merostomata?

Answer 16

Horseshoe crab

Question 17

What are common names for organisms in Class Arachnida?

Answer 17

Scorpion, pseudoscorpion, harvestman, spider, tick, mite

Question 18

What are the two main classes in Subphylum Myriapoda?

Answer 18

Chilopoda and Diplopoda

Question 19

What is the common name for organisms in Class Chilopoda?

Answer 19

Centipede

Question 20

What is the common name for organisms in Class Diplopoda?

Answer 20

Millipede

Question 21

What is the largest class in Subphylum Hexapoda?

Answer 21

Class Insecta

Question 22

Name five insects found in Class Insecta.

Answer 22

Flea, mosquito, grasshopper, dragonfly, bumblebee

Question 23

What are common names for organisms in Subphylum Crustacea?

Answer 23

Water flea, wood lice, barnacles, shrimp, lobster, crab, crayfish

Question 24

How can you identify the sex of a crayfish?

Answer 24

Males have larger first pair of swimmerets; females have a wider abdomen

Question 25

What are the key internal structures to identify in a crayfish dissection?

Answer 25

Heart, intestine, stomach, digestive gland, gills, green gland, ventral nerve cord

Question 26

What is the common name for organisms in Class Polychaeta?

Answer 26

Polychaete worms

Question 27

What is the common name for organisms in Class Oligochaeta?

Answer 27

Earthworm

Question 28

What is the common name for organisms in Class Hirudinida?

Answer 28

Leech