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Zoology > Coelenterata > Flashcards

Coelenterata Flashcards

1
Q

Hydra

A

Water serpent

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2
Q

Obelia

A

Sea fur

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3
Q

Physalia

A

Portugese man of war

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4
Q

Cyanea

A

Sun jelly

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5
Q

Aurelia

A

Moon jelly

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6
Q

Rhizostoma

A

Largest jellyfish

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7
Q

Gorgonia

A

Sea fan

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8
Q

Pennatula

A

Sea pen

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9
Q

Adamsia

A

Sea anemone

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10
Q

Tubipora

A

Organ pipe coral

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11
Q

Heliopora

A

Blue coral

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12
Q

Term Coelenterata given by

A

Leuckart

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13
Q

Term Cnidaria given by

A

Hyman

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14
Q

Totipotent cells in coelenterates

A

Interstitial cells

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15
Q

Cells exclusive to ectoderm of coelenterates

A

Cnidoblast cells and germ cells

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16
Q

Larva of coelenterates

A

Planula

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17
Q

Polyp form

A
  1. Asexual
  2. Mouth in hypostome
  3. Velum absent
  4. 24 tentacles
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18
Q

Medusa form

A
  1. Sexual
  2. Mouth in manubrium
  3. Velum is present
  4. 16 tentacles
19
Q

Hydrozoa

A
  1. Diploblastic
  2. Ectodermal gonads
  3. Polyp and medusa
20
Q

Scyphozoa

A
  1. Triploblastic
  2. Endodermal gonads
  3. Medusa present, Polyp absent
    # Thick mesoglea
21
Q

Anthozoa

A
  1. Triploblastic
  2. Endodermal gonads
  3. Polyp present, medusa absent
22
Q

Only neurotoxic coelenterate

A

Physalia

23
Q

Bioluminescent coelenterate

A

Aurelia

24
Q

Proto-cooperation with hermit crab

A

Adamsia

25
Q

Marine hydra

A

Proto-hydra

26
Q

Most sensitive part of coelenterates

A

Hypostome

27
Q

Function of pedal disc

A
  1. Adhesive substance for attachment
  2. Gas bubble for floatation
28
Q

Hollow tentacles

A

Hydra

29
Q

Solid tentacles

A

Obelia

30
Q

Stenotele / Penetrant nematocyst

A

Injects hypnotoxin

31
Q

Desmoneme / Volvent nematocyst

A

Captures prey

32
Q

Stereoline glutinant

A

Small glutinant / Atrichous isorhiza

33
Q

Streptoline glutinant

A

Large glutinant / Holotrichous isorhiza

34
Q

Epithelio-muscular cells

A

Form longitudinal muscles

35
Q

Epithelio-glandular cells

A

(Pedal disc secretions)

36
Q

Endothelio-muscular cells

A

Form circular muscles

37
Q

Endothelio-glandular cells

A
  1. Enzymatic glands help in extracellular digestion.
  2. Mucous glands secrete slimy fluid for lubrication and entangling prey.
38
Q

Favorite food of hydra

A

Waterfleas (Cyclops and Daphnia)

39
Q

Chemical stimulus to recognize waterfleas

A

Glutathione

40
Q

Nutrient not digested by hydra

A

Starch

41
Q

Galvanotaxis of hydra

A

Tentacle bends towards anode

42
Q

Number of chromosomes in hydra

A

12

43
Q

Fastest means of locomotion in hydra

A

Somersaulting

44
Q

Slowest means of locomotion in hydra

A

Gliding

Zoology (5 decks)

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