Cnidaria and ctenophores

Question 1

Cnidarian body plan shaped like a gelatinous saucer with tentacles that swim

Answer 1

Medusa

Question 2

Cnidarian body plan with a tubular body and is generally stationary

Answer 2

Polyp

Question 3

Gelatinous layer between the epidermis and gastrodermis that all cnidarians possess

Answer 3

Mesoglea

Question 4

Organelles secreted within cnidoblasts and discharged with explosive force

Answer 4

Cnidae

Question 5

Numerous ectodermal and esodermal cells that possess elongated contracted bases Anchored in the mesoglea that makes up the muscle layers of cnidarians

Answer 5

Epitheliomuscular cells/ nutritive-muscular cells

Question 6

Muscular cylinder where jellyfish mouth can be found at the end of

Answer 6

Manubrium

Question 7

Sexes are seperate

Answer 7

Gonochoristic/dioecious

Question 8

Individuals that are both male and female

Answer 8

Maphroditic/monoecious

Question 9

Modules specialized for feeding

Answer 9

Gastrozooids

Question 10

Fingerling modules specialized for defense in hydrozoan colonies

Answer 10

Dactylozooids

Question 11

Gas filled floats

Answer 11

Pneumatophores

Question 12

Modules within a colony of siphonophora often in clusters arranged upon a long stem

Answer 12

Cormidia

Question 13

Worm shaped body plan

Answer 13

Vermiform

Question 14

Anthozean asexual reproduction in which parts of the foot detach from the rest of the animal and gradually differentiate to form a new single module ramete

Answer 14

Pedal laceration

Question 15

Reef building scleractinian corals

Answer 15

Hermatypic

Question 16

Non reefbuilding scleractinian corals

Answer 16

Ahermatypic

Question 17

Larval form of cnidaria with cilia

Answer 17

Planula

Question 18

Mobile body form of cnidarians, shown in sea jellies

Answer 18

Medusa

Question 19

Class of cnidaria that contain some if the deadliest sea jellies

Answer 19

Cubozoa

Question 20

Occurrence in the asexual reproduction in cnidaria at the scyphistoma stage which causes fission of the polyps

Answer 20

Strobilization

Question 21

Structure used for balance within the sense organs of cnidarians

Answer 21

Statocysts

Question 22

Phylum that contains the simplest body form capable of locomotion

Answer 22

Cnidaria

Question 23

In obelia during the polyp stage, the feeding zooids

Answer 23

Hydranths

Question 24

Subphylum that includes some reef corals

Answer 24

Anthozoa

Question 25

In cetnophores, adhesive cells with ctene (bands of cilia)

Answer 25

Colloblasts

Question 26

Stinging cells in cnidarians

Answer 26

Nematocysts

Question 27

Sessile body form of cnidarians, shown in corals

Answer 27

Polyp

Question 28

Thin line separating the epithelio-muscle cells and nutrive-muscle cells

Answer 28

Mesoglea

Question 29

lack of a formal body cavity

Answer 29

acoelomate

Question 30

contractile cells in cnidarians with its base anchored in the mesoglia

Answer 30

myonemes

Question 31

use of a cavity filled with water for structure and support

Answer 31

hydrostatic skeleton

Question 32

sticky cnidae that wrap around prey

Answer 32

spirocysts

Question 33

muscular cylinder with mouth

Answer 33

manubrium

Question 34

sensory center along cnidarian bell margin

Answer 34

rhopalium

Question 35

class of cnidarians with hydroid and medusoid forms, a thick mesoglia, lack a vellum, and are united by using strobilation

Answer 35

class scyphozoa

Question 36

class of cnidarians that are box like with 4 tentacles, have lensed eyes and have highly toxic nematocysts

Answer 36

class cubozoa

Question 37

class of cnidarians that are dominantly polyp forms that can be thecated or athecated and lack mesoglia cells

Answer 37

class hydrozoa

Question 38

ciliated groove around mouth of anthazoans that extends into the pharynx, creates water currents for respiration and maintenance of internal pressure

Answer 38

siphonoglyphs

Question 39

gastrodermic filaments with cnidocytes used in offense and defense

Answer 39

acontia

Question 40

subphylum of cnidarians that are extracellular parasites with modified nematocysts

Answer 40

myxozoa

Question 41

rows of cilia found in ctenophores

Answer 41

ctenes

Question 42

t/f ctenophores have a larval form

Answer 42

false

Question 43

membrane inside cnidarian bell

Answer 43

velum

Question 44

how do cnidarians reproduce?

Answer 44

asexually through budding, strobilation sexually through external fertilization

Question 45

how do ctenophores reproduce?

Answer 45

asexually through regeneration or fragmentation sexually through external fertilization