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Invertebrate Zoology > Cnidaria and ctenophores > Flashcards

Cnidaria and ctenophores Flashcards

1
Q

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

A

Medusa

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2
Q

Cnidarian body plan with a tubular body and is generally stationary

A

Polyp

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3
Q

Gelatinous layer between the epidermis and gastrodermis that all cnidarians possess

A

Mesoglea

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4
Q

Organelles secreted within cnidoblasts and discharged with explosive force

A

Cnidae

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5
Q

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

A

Epitheliomuscular cells/ nutritive-muscular cells

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6
Q

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

A

Manubrium

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7
Q

Sexes are seperate

A

Gonochoristic/dioecious

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8
Q

Individuals that are both male and female

A

Maphroditic/monoecious

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9
Q

Modules specialized for feeding

A

Gastrozooids

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10
Q

Fingerling modules specialized for defense in hydrozoan colonies

A

Dactylozooids

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11
Q

Gas filled floats

A

Pneumatophores

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12
Q

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

A

Cormidia

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13
Q

Worm shaped body plan

A

Vermiform

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14
Q

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

A

Pedal laceration

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15
Q

Reef building scleractinian corals

A

Hermatypic

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16
Q

Non reefbuilding scleractinian corals

A

Ahermatypic

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17
Q

Larval form of cnidaria with cilia

A

Planula

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18
Q

Mobile body form of cnidarians, shown in sea jellies

A

Medusa

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19
Q

Class of cnidaria that contain some if the deadliest sea jellies

A

Cubozoa

20
Q

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

A

Strobilization

21
Q

Structure used for balance within the sense organs of cnidarians

A

Statocysts

22
Q

Phylum that contains the simplest body form capable of locomotion

A

Cnidaria

23
Q

In obelia during the polyp stage, the feeding zooids

A

Hydranths

24
Q

Subphylum that includes some reef corals

A

Anthozoa

25
Q

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

A

Colloblasts

26
Q

Stinging cells in cnidarians

A

Nematocysts

27
Q

Sessile body form of cnidarians, shown in corals

A

Polyp

28
Q

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

A

Mesoglea

29
Q

lack of a formal body cavity

A

acoelomate

30
Q

contractile cells in cnidarians with its base anchored in the mesoglia

A

myonemes

31
Q

use of a cavity filled with water for structure and support

A

hydrostatic skeleton

32
Q

sticky cnidae that wrap around prey

A

spirocysts

33
Q

muscular cylinder with mouth

A

manubrium

34
Q

sensory center along cnidarian bell margin

A

rhopalium

35
Q

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

A

class scyphozoa

36
Q

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

A

class cubozoa

37
Q

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

A

class hydrozoa

38
Q

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

A

siphonoglyphs

39
Q

gastrodermic filaments with cnidocytes used in offense and defense

A

acontia

40
Q

subphylum of cnidarians that are extracellular parasites with modified nematocysts

A

myxozoa

41
Q

rows of cilia found in ctenophores

A

ctenes

42
Q

t/f ctenophores have a larval form

A

false

43
Q

membrane inside cnidarian bell

A

velum

44
Q

how do cnidarians reproduce?

A

asexually through budding, strobilation
sexually through external fertilization

45
Q

how do ctenophores reproduce?

A

asexually through regeneration or fragmentation
sexually through external fertilization

Invertebrate Zoology (10 decks)

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