All classes for Exam 2

Question 1

Class Calcarea

Answer 1

skeleton of calcium carbonate

Question 2

Class Hexactinellida

Answer 2

skeleton of silica

Question 3

Class Demospongiae

Answer 3

skeleton of spongin

Question 4

Class Hydrozoa

Answer 4

hydras, hydroid jellies

Question 5

Class Scyphozoa

Answer 5

True jellies

Question 6

Class Anthozoa

Answer 6

sea anemones, corals

Question 7

Sub class Zoanthania

Answer 7

body parts in sixes; sea anemones and hard corals

Question 8

Sub class Acyonaria

Answer 8

body parts in eights; octocorals

Question 9

Class Cubozoa

Answer 9

sea wasps and box jellies

Question 10

Class Turbellania

Answer 10

free living; planarians

Question 11

Class Trematoda

Answer 11

parasitic fluke worms

Question 12

Class Cestoda

Answer 12

tapeworms

have a scolex & proglottids

Question 13

Class Scaphopodaa

Answer 13

tusk shells

Question 14

Class Gastropoda

Answer 14

snails and seas slugs

Question 15

Subclass Prosobranchia

Answer 15

sea snails

Question 16

Subclass Pulmonata

Answer 16

land snails and slugs

Question 17

Subclass Opistobranchia

Answer 17

sea slugs (nudibranchs)

Question 18

Class polyplacophora

Answer 18

chitons (have 8 shell plates)

Question 19

Class Bivalvia

Answer 19

(2 shell plates)

oysters, clams, scallops, mussels

Question 20

Class Cephalopoda

Answer 20

squid, octopi, nautilus

Question 21

Class Polychaeta

Answer 21

nereis, feather worms, setae, no clitellum

Question 22

Class Hirudinea

Answer 22

leeches, no setae, clitellum

Question 23

Class Oligochaete

Answer 23

earthworms & relatives setae, clitellum

Question 24

Class Merostomata

Answer 24

horseshoe crabs

Question 25

Class Arachnida

Answer 25

8 walking legs; have venoms & eat liquified food

Question 26

Class Pyconogonida

Answer 26

sea spiders

Question 27

Class Branchiopoda

Answer 27

leg gill

Question 28

Class Maxillopoda

Answer 28

has three orders order ostracoda-bivalved carapace order copepoda-copepods order cirripedia-barnacles

Question 29

Class Malacostraca

Answer 29

4 orders

Question 30

Order Decapoda

Answer 30

crabs, shrimps, lobsters, 10 walking legs

Question 31

Order Stomatopoda

Answer 31

mantis shrimp

Question 32

Order Isopoda

Answer 32

flattened body "dorsal ventrally"

Question 33

Order Amphipoda

Answer 33

flattened laterally "beach fleas"