Marine Invertebrates

Question 1

sponges

Answer 1

the simplest multicellular organisms

Question 2

the hollow chamber where water enters a sponge via small pores

Answer 2

Ostia

Question 3

the large opening where the water exits in a sponge

Answer 3

osculum

Question 4

animals that strain food out of the water

Answer 4

suspension or filter feeders

Question 5

animals that ingest sediment and digest the organic matter

Answer 5

deposit feeders

Question 6

a bubble that is produced by Snapping shrimp that collapses violently

Answer 6

cavitation bubble

Question 7

generates a shock wave and dim light flash that can be used for offense or defense

Answer 7

Snapping shrimp’s cavitation bubble

Question 8

oral and aboral

Answer 8

surface type of radially-symmetrical animals

Question 9

phylum cnidaria

Answer 9

sea anemones and corals

Question 10

some cnidarians have a

Answer 10

immobile polyp and mobile medusa stages

Question 11

polyp/medusa

Answer 11

Both variations on the same general body plan

Question 12

polyp

Answer 12

immobile, tube structure (sexual and asexual stage)

Question 13

medusa

Answer 13

free swimming, umbrella structure (sexual stage)

Question 14

box jellyfish

Answer 14

highly venomous cnidarians

Question 15

Class Scyphozoa

Answer 15

the medusa is the dominant stage

Question 16

radially symmetrical phylum, entirely marine, moves by cilia

Answer 16

Ctenophora

Question 17

simplest bilaterally-symmetrical organism

Answer 17

flatworms

Question 18

comb jellies use sticky cells to capture prey

Answer 18

colloblasts

Question 19

flatworms are in?

Answer 19

Phylum Platyhelminthes

Question 20

Phylum Platyhelminthes has 2 parasitic classes

Answer 20

Trematoda and cestoda

Question 21

snail, conch, and whelk are

Answer 21

gastropods/mollusks

Question 21

Mollusks have spiral-shaped shells and muscular feet. They are also called

Answer 21

Gastropods

Question 22

What is the most intelligent class of mollusks

Answer 22

Cephalopods

Question 23

What is the primary defense used by cuttlefish

Answer 23

Camouflage

Question 24

Ribbon worms with a long proboscis that entangle prey are in what phylum?

Answer 24

Nemertea

Question 25

Roundworms belong in what wormlike Phylum?

Answer 25

Nematoda

Question 26

The most abundant group of marine annelids are?

Answer 26

Polychaete worms

Question 27

What class in the mollusks consists of an animal enclosed in 2 shells

Answer 27

Bivalvia

Question 28

What animal is in the Bivalvia class

Answer 28

clam

Question 29

The mantle is the tissue that covers Bivalves, what does it secrete

Answer 29

calcium carbonate CaCO3

Question 30

Scallops are

Answer 30

bivalves that have multiple eyes

Question 31

Crustaceans

Answer 31

belong to the phylum Arthropoda

Question 32

Crustacean growth is punctuated by periodic molting of the exoskeleton,

Answer 32

staircase growth pattern

Question 33

Crustacean weight

Answer 33

linear, continuous

Question 34

Example of an isopod

Answer 34

the terrestrial ‘roly poly’

Question 35

Krill

Answer 35

crustaceans that support the Antarctic food web

Question 36

large fisheries exist for crustaceans belonging to

Answer 36

order Decapoda

Question 37

Decapoda

Answer 37

blue crabs, lobsters, shrimp

Question 38

Horseshoe crabs

Answer 38

important blood has pharmaceutical applications, their eggs nourish migrating shorebirds

Question 39

What belongs to an entire marine phylum and has tetrodotoxin on spines called chaets

Answer 39

Chaetognaths

Question 40

bilaterally symmetrical animals

Answer 40

Adult echinoderms are classified…. because of their larvae

Question 41

Echinoderm locomotion uses hydrostatic pressure controlled by

Answer 41

water vascular system

Question 42

What includes 2 invertebrate subphyla and 1 vertebrate subphylum

Answer 42

Chordates